[content shell] add support for invoking testRunner.notifyDone in a different process

content/shell/notify_done_forwarder.h

Index: content/shell/notify_done_forwarder.h
diff --git a/content/shell/notify_done_forwarder.h b/content/shell/notify_done_forwarder.h
new file mode 100644
index 0000000000000000000000000000000000000000..008371a55bbd9394979e91c94762d19ee0f36ee6
--- /dev/null
+++ b/content/shell/notify_done_forwarder.h
@@ -0,0 +1,34 @@
+// Copyright (c) 2013 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.
+
+#ifndef CONTENT_SHELL_NOTIFY_DONE_FORWARDER_H_
+#define CONTENT_SHELL_NOTIFY_DONE_FORWARDER_H_
+
+#include "base/basictypes.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/browser/web_contents_user_data.h"
+
+namespace content {
+
+class NotifyDoneForwarder : public WebContentsObserver,
+                            public WebContentsUserData<NotifyDoneForwarder> {
+ public:
+  virtual ~NotifyDoneForwarder();
+
+  // WebContentsObserver implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+ private:
+  friend class WebContentsUserData<NotifyDoneForwarder>;
+
+  explicit NotifyDoneForwarder(WebContents* web_contents);
+
+  void OnTestFinishedInSecondaryWindow();
+
+  DISALLOW_COPY_AND_ASSIGN(NotifyDoneForwarder);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_SHELL_NOTIFY_DONE_FORWARDER_H_