content/renderer/screen_orientation/screen_orientation_observer.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/screen_orientation/screen_orientation_observer.h"
   6
   7 #include "content/common/screen_orientation_messages.h"
   8
   9 namespace content {
  10
  11 ScreenOrientationObserver::ScreenOrientationObserver() {
  12 }
  13
  14 ScreenOrientationObserver::~ScreenOrientationObserver() {
  15   StopIfObserving();
  16 }
  17
  18 void ScreenOrientationObserver::Start(
  19     blink::WebPlatformEventListener* listener) {
  20   // This should never be called with a proper listener.
  21   CHECK(listener == 0);
  22   PlatformEventObserver<blink::WebPlatformEventListener>::Start(0);
  23 }
  24
  25 void ScreenOrientationObserver::SendStartMessage() {
  26   RenderThread::Get()->Send(new ScreenOrientationHostMsg_StartListening());
  27 }
  28
  29 void ScreenOrientationObserver::SendStopMessage() {
  30   RenderThread::Get()->Send(new ScreenOrientationHostMsg_StopListening());
  31 }
  32
  33 } // namespace content