Report texture upload time in renderingStats.

content/renderer/render_widget.h

Index: content/renderer/render_widget.h
diff --git a/content/renderer/render_widget.h b/content/renderer/render_widget.h
index faf4840b4ffc4f9175e6b9cacb559cb4f9156d13..b3674df1b0d0a54a2a16355260a4909e23166f44 100644
--- a/content/renderer/render_widget.h
+++ b/content/renderer/render_widget.h
@@ -48,6 +48,7 @@ class WebWidget;
 }
 
 namespace content {
+struct GpuRenderingStats;
 class RenderWidgetTest;
 }
 
@@ -161,6 +162,12 @@ class CONTENT_EXPORT RenderWidget
   // as it blocks on the compositor thread.
   void GetRenderingStats(WebKit::WebRenderingStats&) const;
 
+  // Fills in a GpuRenderingStats struct containing information about
+  // GPU rendering, e.g. count of texture uploads performed, time spent
+  // uploading.
+  // This call is relatively expensive as it blocks on the GPU process
+  void GetGpuRenderingStats(content::GpuRenderingStats&) const;
+
   // Callback for use with BeginSmoothScroll.
   typedef base::Callback<void()> SmoothScrollCompletionCallback;