Add support for Ash to Notifications

chrome/browser/background/background_contents_service.cc

Index: chrome/browser/background/background_contents_service.cc
diff --git a/chrome/browser/background/background_contents_service.cc b/chrome/browser/background/background_contents_service.cc
index 909ef7aec71e823c95a0901379d936c7fcc4e74c..c1edaba15c3b8067201eb133dc2c041b24ca8a1f 100644
--- a/chrome/browser/background/background_contents_service.cc
+++ b/chrome/browser/background/background_contents_service.cc
@@ -64,13 +64,13 @@ class CrashNotificationDelegate : public NotificationDelegate {
         extension_id_(extension->id()) {
   }
 
-  void Display() {}
+  virtual void Display() OVERRIDE {}
 
-  void Error() {}
+  virtual void Error() OVERRIDE {}
 
-  void Close(bool by_user) {}
+  virtual void Close(bool by_user) OVERRIDE {}
 
-  void Click() {
+  virtual void Click() OVERRIDE {
     if (is_hosted_app_) {
       // There can be a race here: user clicks the balloon, and simultaneously
       // reloads the sad tab for the app. So we check here to be safe before
@@ -88,10 +88,14 @@ class CrashNotificationDelegate : public NotificationDelegate {
     ScheduleCloseBalloon(extension_id_);
   }
 
-  std::string id() const {
+  virtual std::string id() const OVERRIDE {
     return kNotificationPrefix + extension_id_;
   }
 
+  virtual content::RenderViewHost* GetRenderViewHost() const OVERRIDE {
+    return NULL;
+  }
+
  private:
   virtual ~CrashNotificationDelegate() {}