Adding hooks for gathering total pixels painted and rasterized stats.

cc/CCRenderingStats.h

Index: cc/CCRenderingStats.h
diff --git a/cc/CCRenderingStats.h b/cc/CCRenderingStats.h
index 0203df3872a0fce38692587bdb9cbfbed120c9e0..8aa6de5c660fe63b332d587feffd28338efabf0a 100644
--- a/cc/CCRenderingStats.h
+++ b/cc/CCRenderingStats.h
@@ -16,6 +16,8 @@ struct CCRenderingStats {
     double totalRasterizeTimeInSeconds;
     double totalCommitTimeInSeconds;
     size_t totalCommitCount;
+    size_t totalPixelsPainted;

[brianderson, 2012/10/05 23:51:55]

Can you change these to int64_t, so we won't need a follow up patch? Please see
https://bugs.webkit.org/show_bug.cgi?id=98337 and
https://codereview.chromium.org/11028021.

[hartmanng, 2012/10/24 21:07:00]

Done.

+    size_t totalPixelsRasterized;
 
     CCRenderingStats()
         : numAnimationFrames(0)
@@ -25,6 +27,8 @@ struct CCRenderingStats {
         , totalRasterizeTimeInSeconds(0)
         , totalCommitTimeInSeconds(0)
         , totalCommitCount(0)
+        , totalPixelsPainted(0)
+        , totalPixelsRasterized(0)
     {
     }
 };