Show OOM notification bar in all tabs sharing same render process

chrome/browser/renderer_host/out_of_memory_message_filter.h

Index: chrome/browser/renderer_host/out_of_memory_message_filter.h
diff --git a/chrome/browser/renderer_host/out_of_memory_message_filter.h b/chrome/browser/renderer_host/out_of_memory_message_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..1d25cf29c5fa44463e7c92788747196d61919038
--- /dev/null
+++ b/chrome/browser/renderer_host/out_of_memory_message_filter.h
@@ -0,0 +1,33 @@
+// Copyright (c) 2011 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 CHROME_BROWSER_RENDERER_HOST_OUT_OF_MEMORY_MESSAGE_FILTER_H_
+#define CHROME_BROWSER_RENDERER_HOST_OUT_OF_MEMORY_MESSAGE_FILTER_H_
+
+#include "chrome/browser/browser_message_filter.h"
+
+namespace IPC {
+class Message;
+}
+
+class OutOfMemoryMessageFilter : public BrowserMessageFilter {
+ public:
+  explicit OutOfMemoryMessageFilter(int process_id);
+
+  // BrowserMessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok);
+ private:
+  ~OutOfMemoryMessageFilter();
+
+  void OnRenderProcessOutOfMemory(IPC::Message* reply_msg);
+  void OnRenderProcessOutOfMemoryOnUIThread();
+
+  // The ID of this process.
+  int process_id_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(OutOfMemoryMessageFilter);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_HOST_OUT_OF_MEMORY_MESSAGE_FILTER_H_