Adding hooks for gathering total pixels painted and rasterized stats.

webkit/compositor_bindings/WebLayerTreeViewImpl.cpp

Index: webkit/compositor_bindings/WebLayerTreeViewImpl.cpp
diff --git a/webkit/compositor_bindings/WebLayerTreeViewImpl.cpp b/webkit/compositor_bindings/WebLayerTreeViewImpl.cpp
index c71d5fc77ed0ef6f0bfd3fecc3179d54fcca2f64..5d3c083bab21301ec65f11aa316409eef558c57d 100644
--- a/webkit/compositor_bindings/WebLayerTreeViewImpl.cpp
+++ b/webkit/compositor_bindings/WebLayerTreeViewImpl.cpp
@@ -177,6 +177,8 @@ void WebLayerTreeViewImpl::renderingStats(WebRenderingStats& stats) const
     stats.totalRasterizeTimeInSeconds = ccStats.totalRasterizeTimeInSeconds;
     stats.totalCommitTimeInSeconds = ccStats.totalCommitTimeInSeconds;
     stats.totalCommitCount = ccStats.totalCommitCount;
+    stats.totalPixelsPainted = ccStats.totalPixelsPainted;
+    stats.totalPixelsRasterized = ccStats.totalPixelsRasterized;
 }
 
 void WebLayerTreeViewImpl::setFontAtlas(SkBitmap bitmap, WebRect asciiToWebRectTable[128], int fontHeight)