Flip HW video decode from being behind an "enable" flag to being behind a "disable" flag

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index a2cc30276823bf341c90abf188280968a1c46729..06d639f4c476c0c7d843176dc061fa6fe97a495f 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -2383,11 +2383,16 @@ WebMediaPlayer* RenderViewImpl::createMediaPlayer(
     collection->AddAudioRenderer(audio_renderer);
   }
 
+  bool use_accelerated_video_decode = false;
+#if defined(OS_CHROMEOS)
+  use_accelerated_video_decode = true;
+#endif
+  use_accelerated_video_decode &= !CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kDisableAcceleratedVideoDecode);
   base::WeakPtr<WebGraphicsContext3DCommandBufferImpl> context3d =
-      !CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableAcceleratedVideoDecode) ?
-      base::WeakPtr<WebGraphicsContext3DCommandBufferImpl>() :
-      RenderThreadImpl::current()->GetGpuVDAContext3D();
+      use_accelerated_video_decode ?
+      RenderThreadImpl::current()->GetGpuVDAContext3D() :
+      base::WeakPtr<WebGraphicsContext3DCommandBufferImpl>();
   if (context3d) {
     MessageLoop* factories_loop =
         RenderThreadImpl::current()->compositor_thread() ?