src/patch/patches/crashpad_1995.patch

diff --git chrome/chrome_elf/BUILD.gn chrome/chrome_elf/BUILD.gn
index 9b08e23e921b..49182504ae36 100644
--- chrome/chrome_elf/BUILD.gn
+++ chrome/chrome_elf/BUILD.gn
@@ -7,6 +7,7 @@
 
 import("//build/config/compiler/compiler.gni")
 import("//build/config/win/manifest.gni")
+import("//cef/libcef/features/features.gni")
 import("//chrome/process_version_rc_template.gni")
 import("//testing/test.gni")
 
@@ -104,9 +105,6 @@ source_set("constants") {
 
 static_library("crash") {
   sources = [
-    "../app/chrome_crash_reporter_client_win.cc",
-    "../app/chrome_crash_reporter_client_win.h",
-    "../common/chrome_result_codes.h",
     "crash/crash_helper.cc",
     "crash/crash_helper.h",
   ]
@@ -114,6 +112,7 @@ static_library("crash") {
     ":hook_util",
     "//base",  # This needs to go.  DEP of app, crash_keys, client.
     "//base:base_static",  # pe_image
+    "//cef/libcef/features",
     "//chrome/install_static:install_static_util",
     "//components/crash/core/app",
     "//components/crash/core/common",  # crash_keys
@@ -121,6 +120,17 @@ static_library("crash") {
     "//content/public/common:result_codes",
     "//third_party/crashpad/crashpad/client",  # DumpWithoutCrash
   ]
+
+  if (enable_cef) {
+    deps += [ "//cef:chrome_elf_set" ]
+    include_dirs = [ "//cef" ]
+  } else {
+    sources += [
+      "//chrome/app/chrome_crash_reporter_client_win.cc",
+      "//chrome/app/chrome_crash_reporter_client_win.h",
+      "//chrome/common/chrome_result_codes.h",
+    ]
+  }
 }
 
 source_set("dll_hash") {
diff --git chrome/chrome_elf/crash/crash_helper.cc chrome/chrome_elf/crash/crash_helper.cc
index 42a4bfcdb856..9f674625a155 100644
--- chrome/chrome_elf/crash/crash_helper.cc
+++ chrome/chrome_elf/crash/crash_helper.cc
@@ -11,12 +11,17 @@
 #include <string>
 #include <vector>
 
+#include "cef/libcef/features/features.h"
 #include "chrome/app/chrome_crash_reporter_client_win.h"
 #include "chrome/chrome_elf/hook_util/hook_util.h"
 #include "components/crash/core/app/crashpad.h"
 #include "components/crash/core/common/crash_keys.h"
 #include "third_party/crashpad/crashpad/client/crashpad_client.h"
 
+#if BUILDFLAG(ENABLE_CEF)
+#include "cef/libcef/common/crash_reporter_client.h"
+#endif
+
 namespace {
 
 // Crash handling from elf is only enabled for the chrome.exe process.
@@ -77,7 +82,11 @@ bool InitializeCrashReporting() {
   g_crash_reports = new std::vector<crash_reporter::Report>;
   g_set_unhandled_exception_filter = new elf_hook::IATHook();
 
+#if BUILDFLAG(ENABLE_CEF)
+  CefCrashReporterClient::InitializeCrashReportingForProcess();
+#else
   ChromeCrashReporterClient::InitializeCrashReportingForProcess();
+#endif
 
   g_crash_helper_enabled = true;
   return true;
diff --git chrome/common/crash_keys.cc chrome/common/crash_keys.cc
index f9a6c6b6ae2d..3701b4423899 100644
--- chrome/common/crash_keys.cc
+++ chrome/common/crash_keys.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/common/crash_keys.h"
 
+#include <iterator>
+
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/logging.h"
@@ -28,7 +30,7 @@
 namespace crash_keys {
 
 // Return true if we DON'T want to upload this flag to the crash server.
-static bool IsBoringSwitch(const std::string& flag) {
+bool IsBoringChromeSwitch(const std::string& flag) {
   static const char* const kIgnoreSwitches[] = {
     switches::kEnableLogging,
     switches::kFlagSwitchesBegin,
@@ -83,7 +85,7 @@ static bool IsBoringSwitch(const std::string& flag) {
 }
 
 void SetCrashKeysFromCommandLine(const base::CommandLine& command_line) {
-  return SetSwitchesFromCommandLine(command_line, &IsBoringSwitch);
+  return SetSwitchesFromCommandLine(command_line, &IsBoringChromeSwitch);
 }
 
 void SetActiveExtensions(const std::set<std::string>& extensions) {
diff --git chrome/common/crash_keys.h chrome/common/crash_keys.h
index bcf172e645a2..f879aa745adf 100644
--- chrome/common/crash_keys.h
+++ chrome/common/crash_keys.h
@@ -17,6 +17,10 @@ class CommandLine;
 
 namespace crash_keys {
 
+// Returns true if the specified command-line flag should be excluded from
+// crash reporting.
+bool IsBoringChromeSwitch(const std::string& flag);
+
 // Sets the kNumSwitches key and the set of keys named using kSwitchFormat based
 // on the given |command_line|.
 void SetCrashKeysFromCommandLine(const base::CommandLine& command_line);
diff --git components/crash/core/app/breakpad_linux.cc components/crash/core/app/breakpad_linux.cc
index 192b0a7f137f..d53b90173ae2 100644
--- components/crash/core/app/breakpad_linux.cc
+++ components/crash/core/app/breakpad_linux.cc
@@ -28,6 +28,7 @@
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/dump_without_crashing.h"
+#include "base/debug/leak_annotations.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/linux_util.h"
@@ -104,6 +105,7 @@ namespace {
 uint64_t g_crash_loop_before_time = 0;
 #else
 const char kUploadURL[] = "https://clients2.google.com/cr/report";
+const char* g_crash_server_url = kUploadURL;
 #endif
 
 bool g_is_crash_reporter_enabled = false;
@@ -717,7 +719,7 @@ bool CrashDone(const MinidumpDescriptor& minidump,
   info.process_type_length = 7;
   info.distro = base::g_linux_distro;
   info.distro_length = my_strlen(base::g_linux_distro);
-  info.upload = upload;
+  info.upload = upload && g_crash_server_url;
   info.process_start_time = g_process_start_time;
   info.oom_size = base::g_oom_size;
   info.pid = g_pid;
@@ -1404,7 +1406,7 @@ void ExecUploadProcessOrTerminate(const BreakpadInfo& info,
     header_content_encoding,
     header_content_type,
     post_file,
-    kUploadURL,
+    g_crash_server_url,
     "--timeout=10",  // Set a timeout so we don't hang forever.
     "--tries=1",     // Don't retry if the upload fails.
     "-O",  // Output reply to the file descriptor path.
@@ -1744,10 +1746,19 @@ void HandleCrashDump(const BreakpadInfo& info) {
     GetCrashReporterClient()->GetProductNameAndVersion(&product_name, &version);
 
     writer.AddBoundary();
-    writer.AddPairString("prod", product_name);
+    writer.AddPairString("product", product_name);
+    writer.AddBoundary();
+    writer.AddPairString("version", version);
     writer.AddBoundary();
-    writer.AddPairString("ver", version);
+
+#if defined(ARCH_CPU_32_BITS)
+    const char* platform = "linux32";
+#elif defined(ARCH_CPU_64_BITS)
+    const char* platform = "linux64";
+#endif
+    writer.AddPairString("platform", platform);
     writer.AddBoundary();
+
     if (info.pid > 0) {
       char pid_value_buf[kUint64StringSize];
       uint64_t pid_value_len = my_uint64_len(info.pid);
@@ -1864,6 +1875,9 @@ void HandleCrashDump(const BreakpadInfo& info) {
         crash_reporter::internal::TransitionalCrashKeyStorage;
     CrashKeyStorage::Iterator crash_key_iterator(*info.crash_keys);
     const CrashKeyStorage::Entry* entry;
+
+    crash_reporter::CrashReporterClient::ParameterMap parameters;
+
     while ((entry = crash_key_iterator.Next())) {
       if (g_use_crash_key_white_list && !IsInWhiteList(entry->key))
         continue;
@@ -1876,7 +1890,13 @@ void HandleCrashDump(const BreakpadInfo& info) {
                        ? CrashKeyStorage::value_size - 1
                        : my_strlen(entry->value);
 
-      writer.AddPairData(entry->key, key_size, entry->value, value_size);
+      parameters.insert(std::make_pair(std::string{entry->key, key_size}, std::string{entry->value, value_size}));
+    }
+    if (!parameters.empty())
+      parameters = GetCrashReporterClient()->FilterParameters(parameters);
+
+    for (const auto& param : parameters) {
+      writer.AddPairData(param.first.data(), param.first.size(), param.second.data(), param.second.size());
       writer.AddBoundary();
       writer.Flush();
     }
@@ -2088,6 +2108,17 @@ void SetChannelCrashKey(const std::string& channel) {
   channel_key.Set(channel);
 }
 
+void SetCrashServerURL(const std::string& url) {
+  if (url.empty()) {
+    g_crash_server_url = nullptr;
+  } else {
+    char* new_url = new char[url.size() + 1];
+    ANNOTATE_LEAKING_OBJECT_PTR(new_url);
+    strcpy(new_url, url.c_str());
+    g_crash_server_url = new_url;
+  }
+}
+
 #if defined(OS_ANDROID)
 void InitNonBrowserCrashReporterForAndroid(const std::string& process_type) {
   SanitizationInfo sanitization_info;
diff --git components/crash/core/app/breakpad_linux.h components/crash/core/app/breakpad_linux.h
index 9ea80370a842..3043f7d32f33 100644
--- components/crash/core/app/breakpad_linux.h
+++ components/crash/core/app/breakpad_linux.h
@@ -20,6 +20,9 @@ extern void InitCrashReporter(const std::string& process_type);
 // Sets the product/distribution channel crash key.
 void SetChannelCrashKey(const std::string& channel);
 
+// Set the crash server URL.
+void SetCrashServerURL(const std::string& url);
+
 #if defined(OS_ANDROID)
 extern void InitCrashKeysForTesting();
 
diff --git components/crash/core/app/crash_reporter_client.cc components/crash/core/app/crash_reporter_client.cc
index e778f68af30f..d2a2a6bf1f67 100644
--- components/crash/core/app/crash_reporter_client.cc
+++ components/crash/core/app/crash_reporter_client.cc
@@ -88,7 +88,7 @@ int CrashReporterClient::GetResultCodeRespawnFailed() {
 }
 #endif
 
-#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_IOS)
+#if defined(OS_POSIX) && !defined(OS_IOS)
 void CrashReporterClient::GetProductNameAndVersion(const char** product_name,
                                                    const char** version) {
 }
@@ -97,6 +97,7 @@ void CrashReporterClient::GetProductNameAndVersion(std::string* product_name,
                                                    std::string* version,
                                                    std::string* channel) {}
 
+#if !defined(OS_MACOSX)
 base::FilePath CrashReporterClient::GetReporterLogFilename() {
   return base::FilePath();
 }
@@ -106,6 +107,7 @@ bool CrashReporterClient::HandleCrashDump(const char* crashdump_filename,
   return false;
 }
 #endif
+#endif
 
 #if defined(OS_WIN)
 bool CrashReporterClient::GetCrashDumpLocation(base::string16* crash_dir) {
@@ -148,6 +150,32 @@ bool CrashReporterClient::ReportingIsEnforcedByPolicy(bool* breakpad_enabled) {
   return false;
 }
 
+bool CrashReporterClient::EnableBreakpadForProcess(
+    const std::string& process_type) {
+  return false;
+}
+
+std::string CrashReporterClient::GetCrashServerURL() {
+  return std::string();
+}
+
+void CrashReporterClient::GetCrashOptionalArguments(
+    std::vector<std::string>* arguments) {
+}
+
+#if defined(OS_WIN)
+base::string16 CrashReporterClient::GetCrashExternalHandler(
+    const base::string16& exe_dir) {
+  return exe_dir + L"\\crashpad_handler.exe";
+}
+#endif
+
+#if defined(OS_MACOSX)
+bool CrashReporterClient::EnableBrowserCrashForwarding() {
+  return true;
+}
+#endif
+
 #if defined(OS_ANDROID)
 unsigned int CrashReporterClient::GetCrashDumpPercentage() {
   return 100;
@@ -200,9 +228,11 @@ bool CrashReporterClient::ShouldMonitorCrashHandlerExpensively() {
   return false;
 }
 
-bool CrashReporterClient::EnableBreakpadForProcess(
-    const std::string& process_type) {
-  return false;
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
+CrashReporterClient::ParameterMap
+CrashReporterClient::FilterParameters(const ParameterMap& parameters) {
+  return parameters;
 }
+#endif
 
 }  // namespace crash_reporter
diff --git components/crash/core/app/crash_reporter_client.h components/crash/core/app/crash_reporter_client.h
index 9cc78fc25840..f54cdbdf2fc4 100644
--- components/crash/core/app/crash_reporter_client.h
+++ components/crash/core/app/crash_reporter_client.h
@@ -5,7 +5,9 @@
 #ifndef COMPONENTS_CRASH_CORE_APP_CRASH_REPORTER_CLIENT_H_
 #define COMPONENTS_CRASH_CORE_APP_CRASH_REPORTER_CLIENT_H_
 
+#include <map>
 #include <string>
+#include <vector>
 
 #include "base/strings/string16.h"
 #include "build/build_config.h"
@@ -91,7 +93,7 @@ class CrashReporterClient {
   virtual int GetResultCodeRespawnFailed();
 #endif
 
-#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_IOS)
+#if defined(OS_POSIX) && !defined(OS_IOS)
   // Returns a textual description of the product type and version to include
   // in the crash report. Neither out parameter should be set to NULL.
   // TODO(jperaza): Remove the 2-parameter overload of this method once all
@@ -102,6 +104,7 @@ class CrashReporterClient {
                                         std::string* version,
                                         std::string* channel);
 
+#if !defined(OS_MACOSX)
   virtual base::FilePath GetReporterLogFilename();
 
   // Custom crash minidump handler after the minidump is generated.
@@ -111,6 +114,7 @@ class CrashReporterClient {
   // libc nor allocate memory normally.
   virtual bool HandleCrashDump(const char* crashdump_filename,
                                uint64_t crash_pid);
+#endif
 #endif
 
   // The location where minidump files should be written. Returns true if
@@ -210,6 +214,30 @@ class CrashReporterClient {
 
   // Returns true if breakpad should run in the given process type.
   virtual bool EnableBreakpadForProcess(const std::string& process_type);
+
+  // Returns the URL for submitting crash reports.
+  virtual std::string GetCrashServerURL();
+
+  // Populate |arguments| with additional optional arguments.
+  virtual void GetCrashOptionalArguments(std::vector<std::string>* arguments);
+
+#if defined(OS_WIN)
+  // Returns the absolute path to the external crash handler exe.
+  virtual base::string16 GetCrashExternalHandler(const base::string16& exe_dir);
+#endif
+
+#if defined(OS_MACOSX)
+  // Returns true if forwarding of crashes to the system crash reporter is
+  // enabled for the browser process.
+  virtual bool EnableBrowserCrashForwarding();
+#endif
+
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
+  // Provides an oportunity to modify the parameters that will be sent with a
+  // crash upload.
+  using ParameterMap = std::map<std::string, std::string>;
+  virtual ParameterMap FilterParameters(const ParameterMap& parameters);
+#endif
 };
 
 }  // namespace crash_reporter
diff --git components/crash/core/app/crashpad.cc components/crash/core/app/crashpad.cc
index 290b4692c16f..ef91dbdc369d 100644
--- components/crash/core/app/crashpad.cc
+++ components/crash/core/app/crashpad.cc
@@ -151,7 +151,8 @@ void InitializeCrashpadImpl(bool initial_client,
   // fallback. Forwarding is turned off for debug-mode builds even for the
   // browser process, because the system's crash reporter can take a very long
   // time to chew on symbols.
-  if (!browser_process || is_debug_build) {
+  if (!browser_process || is_debug_build ||
+      !GetCrashReporterClient()->EnableBrowserCrashForwarding()) {
     crashpad::CrashpadInfo::GetCrashpadInfo()
         ->set_system_crash_reporter_forwarding(crashpad::TriState::kDisabled);
   }
diff --git components/crash/core/app/crashpad_mac.mm components/crash/core/app/crashpad_mac.mm
index b579521d5586..644756cf710c 100644
--- components/crash/core/app/crashpad_mac.mm
+++ components/crash/core/app/crashpad_mac.mm
@@ -16,12 +16,15 @@
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/foundation_util.h"
+#include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/sys_string_conversions.h"
 #include "build/branding_buildflags.h"
 #include "components/crash/core/app/crash_reporter_client.h"
+#include "components/crash/core/app/crash_switches.h"
+#include "content/public/common/content_paths.h"
 #include "third_party/crashpad/crashpad/client/crash_report_database.h"
 #include "third_party/crashpad/crashpad/client/crashpad_client.h"
 #include "third_party/crashpad/crashpad/client/crashpad_info.h"
@@ -37,12 +40,25 @@ namespace {
 std::map<std::string, std::string> GetProcessSimpleAnnotations() {
   static std::map<std::string, std::string> annotations = []() -> auto {
     std::map<std::string, std::string> process_annotations;
+
     @autoreleasepool {
       NSBundle* outer_bundle = base::mac::OuterBundle();
-      NSString* product = base::mac::ObjCCast<NSString>([outer_bundle
-          objectForInfoDictionaryKey:base::mac::CFToNSCast(kCFBundleNameKey)]);
-      process_annotations["prod"] =
-          base::SysNSStringToUTF8(product).append("_Mac");
+
+      CrashReporterClient* crash_reporter_client = GetCrashReporterClient();
+      const char* product_name = "";
+      const char* product_version = "";
+      crash_reporter_client->GetProductNameAndVersion(&product_name,
+                                                      &product_version);
+
+      if (strlen(product_name) == 0) {
+        NSString* product = base::mac::ObjCCast<NSString>([outer_bundle
+            objectForInfoDictionaryKey:base::mac::CFToNSCast(
+                kCFBundleNameKey)]);
+        process_annotations["product"] =
+            base::SysNSStringToUTF8(product).append("_Mac");
+      } else {
+        process_annotations["product"] = product_name;
+      }
 
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING)
       // Empty means stable.
@@ -58,12 +74,16 @@ std::map<std::string, std::string> GetProcessSimpleAnnotations() {
         process_annotations["channel"] = "";
       }
 
-      NSString* version =
-          base::mac::ObjCCast<NSString>([base::mac::FrameworkBundle()
-              objectForInfoDictionaryKey:@"CFBundleShortVersionString"]);
-      process_annotations["ver"] = base::SysNSStringToUTF8(version);
+      if (strlen(product_version) == 0) {
+        NSString* version =
+            base::mac::ObjCCast<NSString>([base::mac::FrameworkBundle()
+                objectForInfoDictionaryKey:@"CFBundleShortVersionString"]);
+        process_annotations["version"] = base::SysNSStringToUTF8(version);
+      } else {
+        process_annotations["version"] = product_version;
+      }
 
-      process_annotations["plat"] = std::string("OS X");
+      process_annotations["platform"] = std::string("macos");
     }  // @autoreleasepool
     return process_annotations;
   }();
@@ -123,10 +143,10 @@ base::FilePath PlatformCrashpadInitialization(
 
   if (initial_client) {
     @autoreleasepool {
-      base::FilePath framework_bundle_path = base::mac::FrameworkBundlePath();
-      base::FilePath handler_path =
-          framework_bundle_path.Append("Helpers").Append(
-              "chrome_crashpad_handler");
+      // Use the same subprocess helper exe.
+      base::FilePath handler_path;
+      base::PathService::Get(content::CHILD_PROCESS_EXE, &handler_path);
+      DCHECK(!handler_path.empty());
 
       // Is there a way to recover if this fails?
       CrashReporterClient* crash_reporter_client = GetCrashReporterClient();
@@ -138,7 +158,7 @@ base::FilePath PlatformCrashpadInitialization(
       // crash server won't have symbols for any other build types.
       std::string url = "https://clients2.google.com/cr/report";
 #else
-      std::string url;
+      std::string url = crash_reporter_client->GetCrashServerURL();
 #endif
 
       std::vector<std::string> arguments;
@@ -161,6 +181,12 @@ base::FilePath PlatformCrashpadInitialization(
             "--reset-own-crash-exception-port-to-system-default");
       }
 
+      // Since we're using the same subprocess helper exe we must specify the
+      // process type.
+      arguments.push_back(std::string("--type=") + switches::kCrashpadHandler);
+
+      crash_reporter_client->GetCrashOptionalArguments(&arguments);
+
       bool result = GetCrashpadClient().StartHandler(
           handler_path, database_path, metrics_path, url,
           GetProcessSimpleAnnotations(), arguments, true, false);
diff --git components/crash/core/app/crashpad_win.cc components/crash/core/app/crashpad_win.cc
index 669f5bea844d..734163c0aad1 100644
--- components/crash/core/app/crashpad_win.cc
+++ components/crash/core/app/crashpad_win.cc
@@ -36,8 +36,8 @@ void GetPlatformCrashpadAnnotations(
   base::string16 product_name, version, special_build, channel_name;
   crash_reporter_client->GetProductNameAndVersion(
       exe_file, &product_name, &version, &special_build, &channel_name);
-  (*annotations)["prod"] = base::UTF16ToUTF8(product_name);
-  (*annotations)["ver"] = base::UTF16ToUTF8(version);
+  (*annotations)["product"] = base::UTF16ToUTF8(product_name);
+  (*annotations)["version"] = base::UTF16ToUTF8(version);
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING)
   // Empty means stable.
   const bool allow_empty_channel = true;
@@ -49,9 +49,9 @@ void GetPlatformCrashpadAnnotations(
   if (!special_build.empty())
     (*annotations)["special"] = base::UTF16ToUTF8(special_build);
 #if defined(ARCH_CPU_X86)
-  (*annotations)["plat"] = std::string("Win32");
+  (*annotations)["platform"] = std::string("win32");
 #elif defined(ARCH_CPU_X86_64)
-  (*annotations)["plat"] = std::string("Win64");
+  (*annotations)["platform"] = std::string("win64");
 #endif
 }
 
@@ -66,7 +66,9 @@ base::FilePath PlatformCrashpadInitialization(
   base::FilePath metrics_path;  // Only valid in the browser process.
 
   const char kPipeNameVar[] = "CHROME_CRASHPAD_PIPE_NAME";
+#if defined(GOOGLE_CHROME_BUILD)
   const char kServerUrlVar[] = "CHROME_CRASHPAD_SERVER_URL";
+#endif
   std::unique_ptr<base::Environment> env(base::Environment::Create());
 
   CrashReporterClient* crash_reporter_client = GetCrashReporterClient();
@@ -87,13 +89,13 @@ base::FilePath PlatformCrashpadInitialization(
 
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING)
     std::string url = "https://clients2.google.com/cr/report";
-#else
-    std::string url;
-#endif
 
     // Allow the crash server to be overridden for testing. If the variable
     // isn't present in the environment then the default URL will remain.
     env->GetVar(kServerUrlVar, &url);
+#else
+    std::string url = crash_reporter_client->GetCrashServerURL();
+#endif
 
     base::FilePath exe_file(exe_path);
     if (exe_file.empty()) {
@@ -104,13 +106,14 @@ base::FilePath PlatformCrashpadInitialization(
       exe_file = base::FilePath(exe_file_path);
     }
 
-    // If the handler is embedded in the binary (e.g. chrome, setup), we
-    // reinvoke it with --type=crashpad-handler. Otherwise, we use the
-    // standalone crashpad_handler.exe (for tests, etc.).
     std::vector<std::string> start_arguments(initial_arguments);
+
+    // Always add --type=crashpad-handler because the value is expected by
+    // CefExecuteProcess.
+    start_arguments.push_back(
+        std::string("--type=") + switches::kCrashpadHandler);
+
     if (embedded_handler) {
-      start_arguments.push_back(std::string("--type=") +
-                                switches::kCrashpadHandler);
       if (!user_data_dir.empty()) {
         start_arguments.push_back(std::string("--user-data-dir=") +
                                   user_data_dir);
@@ -121,9 +124,12 @@ base::FilePath PlatformCrashpadInitialization(
       start_arguments.push_back("/prefetch:7");
     } else {
       base::FilePath exe_dir = exe_file.DirName();
-      exe_file = exe_dir.Append(FILE_PATH_LITERAL("crashpad_handler.exe"));
+      exe_file = base::FilePath(
+          crash_reporter_client->GetCrashExternalHandler(exe_dir.value()));
     }
 
+    crash_reporter_client->GetCrashOptionalArguments(&start_arguments);
+
     std::vector<std::string> arguments(start_arguments);
 
     if (crash_reporter_client->ShouldMonitorCrashHandlerExpensively()) {