Distinguish in the browser between renderer crashes and kills

android_webview/browser/aw_content_browser_client.cc

Index: android_webview/browser/aw_content_browser_client.cc
diff --git a/android_webview/browser/aw_content_browser_client.cc b/android_webview/browser/aw_content_browser_client.cc
index 573e2416297bdfbee1162d2bfb320b94748c796f..64922f2ee69eaa63513fb381def3c04e9098a8cd 100644
--- a/android_webview/browser/aw_content_browser_client.cc
+++ b/android_webview/browser/aw_content_browser_client.cc
@@ -24,8 +24,10 @@
 #include "base/android/locale_utils.h"
 #include "base/base_paths_android.h"
 #include "base/command_line.h"
+#include "base/files/scoped_file.h"
 #include "base/path_service.h"
 #include "components/cdm/browser/cdm_message_filter_android.h"
+#include "components/crash/content/browser/crash_micro_dump_manager_android.h"
 #include "components/navigation_interception/intercept_navigation_delegate.h"
 #include "content/public/browser/access_token_store.h"
 #include "content/public/browser/browser_message_filter.h"
@@ -485,6 +487,14 @@ void AwContentBrowserClient::GetAdditionalMappedFilesForChildProcess(
 
   fd = ui::GetLocalePackFd(&(*regions)[kAndroidWebViewLocalePakDescriptor]);
   mappings->Share(kAndroidWebViewLocalePakDescriptor, fd);
+
+  base::File crash_signal_file =
+      breakpad::CrashMicroDumpManager::GetInstance()->CreateCrashInfoChannel(
+          child_process_id);
+  if (crash_signal_file.IsValid()) {
+    mappings->Transfer(kAndroidWebViewCrashSignalDescriptor,
+                       base::ScopedFD(crash_signal_file.TakePlatformFile()));
+  }
 }
 
 void AwContentBrowserClient::OverrideWebkitPrefs(