Fix naming of one accelerated compositing stat used in benchmarking

The name was slightly misleading; instead of counting the total number of
cc/layers in the layer tree, it actually counts the number of layers that are
issued to be drawn.


Review URL: https://chromiumcodereview.appspot.com/11418245

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@170368 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/cc/rendering_stats.h b/cc/rendering_stats.h
index 995819c..d26cc80525 100644
--- a/cc/rendering_stats.h
+++ b/cc/rendering_stats.h
@@ -23,7 +23,7 @@
     int64 totalPixelsRasterized;
     int64 numImplThreadScrolls;
     int64 numMainThreadScrolls;
-    int64 numLayersInLayerTree;
+    int64 numLayersDrawn;
 
     RenderingStats();
 };