Chromium plumbing for Screen Orientation API orientationchange events.

content/browser/screen_orientation/screen_orientation_dispatcher_host.cc

+// 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.
+
+#include "content/browser/screen_orientation/screen_orientation_dispatcher_host.h"
+
+#include "content/common/screen_orientation_messages.h"
+
+namespace content {
+
+ScreenOrientationDispatcherHost::ScreenOrientationDispatcherHost()
+  : BrowserMessageFilter(ScreenOrientationMsgStart) {
+}
+
+bool ScreenOrientationDispatcherHost::OnMessageReceived(
+    const IPC::Message& message, bool* message_was_ok) {
+  // TODO(mlamouri): we will handle lock and unlock requests here.

[Cris Neckar, 2014/02/26 19:39:20]

Please request IPC security review on the CL where this is implemented.

+  return false;
+}
+
+void ScreenOrientationDispatcherHost::OnOrientationChange(
+    blink::WebScreenOrientation orientation) {
+  Send(new ScreenOrientationMsg_OrientationChange(orientation));
+}
+
+}  // namespace content