Poll for Display rotation on Android 4.0 and 4.1 when needed.

content/browser/screen_orientation/screen_orientation_message_filter_android.h

Index: content/browser/screen_orientation/screen_orientation_message_filter_android.h
diff --git a/content/browser/screen_orientation/screen_orientation_message_filter_android.h b/content/browser/screen_orientation/screen_orientation_message_filter_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..9e196737581181ba014ca9599d54b1cd725cdf07
--- /dev/null
+++ b/content/browser/screen_orientation/screen_orientation_message_filter_android.h
@@ -0,0 +1,32 @@
+// Copyright 2014 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_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_MESSAGE_FILTER_ANDROID_H_
+#define CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_MESSAGE_FILTER_ANDROID_H_
+
+#include "content/public/browser/browser_message_filter.h"
+
+namespace content {
+
+class ScreenOrientationMessageFilterAndroid : public BrowserMessageFilter {
+ public:
+  ScreenOrientationMessageFilterAndroid();
+
+  // BrowserMessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+ private:
+  virtual ~ScreenOrientationMessageFilterAndroid();
+
+  void OnStartListening();
+  void OnStopListening();
+
+  int listeners_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScreenOrientationMessageFilterAndroid);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_MESSAGE_FILTER_ANDROID_H_