Revert of 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() {
-}
-
-bool ScreenOrientationDispatcherHost::OnMessageReceived(
-    const IPC::Message& message, bool* message_was_ok) {
-  // TODO(mlamouri): we will handle lock and unlock requests here.
-  return false;
-}
-
-void ScreenOrientationDispatcherHost::OnOrientationChange(
-    blink::WebScreenOrientation orientation) {
-  Send(new ScreenOrientationMsg_OrientationChange(orientation));
-}
-
-}  // namespace content