Adding hooks for gathering total pixels painted and rasterized stats.

content/renderer/gpu/gpu_benchmarking_extension.cc

Index: content/renderer/gpu/gpu_benchmarking_extension.cc
diff --git a/content/renderer/gpu/gpu_benchmarking_extension.cc b/content/renderer/gpu/gpu_benchmarking_extension.cc
index 90d5850e9ca4a5b0f8bc4719e408b4402184d898..201f961f0a71c4fc566d3fbd72a6cf885956b259 100644
--- a/content/renderer/gpu/gpu_benchmarking_extension.cc
+++ b/content/renderer/gpu/gpu_benchmarking_extension.cc
@@ -176,6 +176,10 @@ class GpuBenchmarkingWrapper : public v8::Extension {
                       v8::Integer::New(stats.numImplThreadScrolls));
     stats_object->Set(v8::String::New("numMainThreadScrolls"),
                       v8::Integer::New(stats.numMainThreadScrolls));
+    stats_object->Set(v8::String::New("totalPixelsPainted"),
+                      v8::Integer::New(stats.totalPixelsPainted));
+    stats_object->Set(v8::String::New("totalPixelsRasterized"),
+                      v8::Integer::New(stats.totalPixelsRasterized));
 
     stats_object->Set(v8::String::New("globalTextureUploadCount"),
                       v8::Number::New(gpu_stats.global_texture_upload_count));