Fix pyauto flakiness by waiting for notification that the renderer process'

chrome/browser/automation/automation_provider_observers.cc

 // Copyright (c) 2010 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/automation/automation_provider_observers.h"
 
 #include <deque>
 #include <string>
 #include <vector>
 
@@ skipping 1522 matching lines @@
       this, &OnNotificationBalloonCountObserver::OnBalloonCollectionChanged));
 }
 
 void OnNotificationBalloonCountObserver::OnBalloonCollectionChanged() {
   if (static_cast<int>(collection_->GetActiveBalloons().size()) == count_) {
     collection_->set_on_collection_changed_callback(NULL);
     reply_.SendSuccess(NULL);
     delete this;
   }
 }
+
+RendererProcessClosedObserver::RendererProcessClosedObserver(
+    AutomationProvider* automation,
+    IPC::Message* reply_message)
+    : automation_(automation),
+      reply_message_(reply_message) {
+  registrar_.Add(this, NotificationType::RENDERER_PROCESS_CLOSED,
+                 NotificationService::AllSources());
+}
+
+void RendererProcessClosedObserver::Observe(
+    NotificationType type,
+    const NotificationSource& source,
+    const NotificationDetails& details) {
+  AutomationJSONReply(automation_, reply_message_).SendSuccess(NULL);
+  delete this;
+}