Reenable idle suspension of media elements on Windows.

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 1743 matching lines @@
 }
 
 void WebMediaPlayerImpl::SetSuspendState(bool is_suspended) {
   DCHECK(main_task_runner_->BelongsToCurrentThread());
 
   // Do not change the state after an error has occurred.
   // TODO(sandersd): Update PipelineController to remove the need for this.
   if (IsNetworkStateError(network_state_))
     return;
 
-#if !defined(OS_ANDROID) && !defined(OS_CHROMEOS) && !defined(OS_MACOSX)
+#if !defined(OS_WIN) && !defined(OS_ANDROID) && !defined(OS_CHROMEOS) && \

[DaleCurtis, 2016/11/11 23:16:16]

That's everything now :)

[jbauman, 2016/11/11 23:17:15]

Ok, I wasn't sure if Chromecast was included here or not.

[DaleCurtis, 2016/11/11 23:34:53]

Ah, you're right they're still using this workaround under OS_LINUX, so you
could at least change this to just say OS_LINUX for Chromecast. :/ 

+    !defined(OS_MACOSX)
   // TODO(sandersd): idle suspend is disabled if decoder owns video frame.
   // Used on Windows+Chromecast. Since GetCurrentFrameFromCompositor is a
   // synchronous cross-thread post, avoid the cost on platforms that always
   // allow suspend. Need to find a better mechanism for this. See
   // http://crbug.com/602708
   if (can_suspend_state_ == CanSuspendState::UNKNOWN) {
     scoped_refptr<VideoFrame> frame = GetCurrentFrameFromCompositor();
     if (frame) {
       can_suspend_state_ =
           frame->metadata()->IsTrue(VideoFrameMetadata::DECODER_OWNS_FRAME)
@@ skipping 177 matching lines @@
       pipeline_metadata_.natural_size,
       base::Bind(&GetCurrentTimeInternal, this)));
   watch_time_reporter_->OnVolumeChange(volume_);
   if (delegate_ && delegate_->IsHidden())
     watch_time_reporter_->OnHidden();
   else
     watch_time_reporter_->OnShown();
 }
 
 }  // namespace media