Graceful handling of extension process crashes

chrome/browser/extensions/extension_process_manager.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/extension_process_manager.h"
 
 #include "chrome/browser/browsing_instance.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extensions_service.h"
 #include "chrome/browser/profile.h"
@@ skipping 102 matching lines @@
 
 void ExtensionProcessManager::OnExtensionHostDestroyed(ExtensionHost* host) {
   all_hosts_.erase(host);
   background_hosts_.erase(host);
   NotificationService::current()->Notify(
       NotificationType::EXTENSION_HOST_DESTROYED,
       Source<ExtensionProcessManager>(this),
       Details<ExtensionHost>(host));
 }
 
+void ExtensionProcessManager::OnExtensionProcessCrashed(ExtensionHost* host) {
+  NotificationService::current()->Notify(
+      NotificationType::EXTENSION_PROCESS_CRASHED,
+      Source<ExtensionProcessManager>(this),
+      Details<ExtensionHost>(host));
+}
+
+void ExtensionProcessManager::OnExtensionProcessRestored(ExtensionHost* host) {
+  NotificationService::current()->Notify(
+      NotificationType::EXTENSION_PROCESS_RESTORED,
+      Source<ExtensionProcessManager>(this),
+      Details<ExtensionHost>(host));
+}
+
 void ExtensionProcessManager::OnExtensionHostCreated(ExtensionHost* host,
                                                      bool is_background) {
   all_hosts_.insert(host);
   if (is_background)
     background_hosts_.insert(host);
   NotificationService::current()->Notify(
       NotificationType::EXTENSION_HOST_CREATED,
       Source<ExtensionProcessManager>(this),
       Details<ExtensionHost>(host));
 }