gpu: media: RenderingHelper: wait for the display & window to be ready

content/common/gpu/media/rendering_helper.h

Index: content/common/gpu/media/rendering_helper.h
diff --git a/content/common/gpu/media/rendering_helper.h b/content/common/gpu/media/rendering_helper.h
index 817ab1915a3496247c9bb9481942cc10ab8e12be..7ab5b194fbfac930598d1fb353ef29d156867d93 100644
--- a/content/common/gpu/media/rendering_helper.h
+++ b/content/common/gpu/media/rendering_helper.h
@@ -86,6 +86,14 @@ class RenderingHelper {
 
   static bool InitializeOneOff();
 
+  // Setup the platform window to display test results. This method
+  // must be called on the main thread.
+  void Setup();
+
+  // Tear down the platform window. This method must be called on the
+  // main thread.
+  void TearDown();
+
   // Create the render context and windows by the specified dimensions.
   void Initialize(const RenderingHelperParams& params,
                   base::WaitableEvent* done);