Reenable idle suspension of media elements on Windows.

media/blink/webmediaplayer_impl.cc

Index: media/blink/webmediaplayer_impl.cc
diff --git a/media/blink/webmediaplayer_impl.cc b/media/blink/webmediaplayer_impl.cc
index c746292dd77438a14580527234d2265b82549804..b8c006331af0086c774ddf282c908cf061e538d0 100644
--- a/media/blink/webmediaplayer_impl.cc
+++ b/media/blink/webmediaplayer_impl.cc
@@ -1761,7 +1761,8 @@ void WebMediaPlayerImpl::SetSuspendState(bool is_suspended) {
   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