rendering_helper - Warm up the rendering.

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 26e8fb20cf0f9e7aee34e5c70a91ae709ae79b37..ce7f4e192b57e6ad448e6f697655b6970e3c5bdd 100644
--- a/content/common/gpu/media/rendering_helper.h
+++ b/content/common/gpu/media/rendering_helper.h
@@ -52,6 +52,10 @@ struct RenderingHelperParams {
   // The rendering FPS.
   int rendering_fps;
 
+  // The number of empty frames rendered when the rendering helper is
+  // initialized.
+  int warm_up_iterations;
+
   // The desired size of each window. We play each stream in its own window
   // on the screen.
   std::vector<gfx::Size> window_sizes;
@@ -149,6 +153,8 @@ class RenderingHelper {
 
   void RenderContent();
 
+  void WarmUpRendering(int warm_up_iterations);
+
   void LayoutRenderingAreas(const std::vector<gfx::Size>& window_sizes);
 
   // Render |texture_id| to the current view port of the screen using target