[Cast for ATV] Enable UMP on Cast for ATV

media/blink/webmediaplayer_impl.cc

 // Copyright 2013 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 "media/blink/webmediaplayer_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 #include <string>
@@ skipping 1311 matching lines @@
       surface_created_cb.Run(fullscreen_surface_id_);
     else
       pending_surface_request_cb_ = surface_created_cb;
   } else {
     // Tell the decoder to create its own surface.
     surface_created_cb.Run(SurfaceManager::kNoSurfaceID);
   }
 }
 
 std::unique_ptr<Renderer> WebMediaPlayerImpl::CreateRenderer() {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kForceMediaPlayerStartingInFullscreenMode)) {
+    enteredFullscreen();

[liberato (no reviews please), 2016/07/14 16:26:58]

what happens if blink really does enter / exit full screen later?

we probably want enter/exit full screen to do nothing in those cases.

[AndyWu, 2016/07/14 19:02:08]

Done.
Doing nothing in enter/exit full screen is not going to help much if blink
enables this flag by accident. Because the position/size of the video hole in
graphic surface would not match that of video surface.

+  }
+
   RequestSurfaceCB request_surface_cb;
 #if defined(OS_ANDROID)
   request_surface_cb =
       BIND_TO_RENDER_LOOP(&WebMediaPlayerImpl::OnSurfaceRequested);
 #endif
   return renderer_factory_->CreateRenderer(
       media_task_runner_, worker_task_runner_, audio_source_provider_.get(),
       compositor_, request_surface_cb);
 }
 
@@ skipping 348 matching lines @@
   if (isRemote())
     return;
 #endif
 
   // Idle timeout chosen arbitrarily.
   background_pause_timer_.Start(FROM_HERE, base::TimeDelta::FromSeconds(5),
                                 this, &WebMediaPlayerImpl::OnPause);
 }
 
 }  // namespace media