cc: Switch ContentLayerUpdater to use RenderingStatsInstrumentation

cc/resources/content_layer_updater.cc

Index: cc/resources/content_layer_updater.cc
diff --git a/cc/resources/content_layer_updater.cc b/cc/resources/content_layer_updater.cc
index 0651e87f9ddb2d55add54ab45bbb35436576a620..b96881b4502731022e326ce1664933763ab4ec61 100644
--- a/cc/resources/content_layer_updater.cc
+++ b/cc/resources/content_layer_updater.cc
@@ -32,6 +32,9 @@ void ContentLayerUpdater::PaintContents(SkCanvas* canvas,
                                         gfx::Rect* resulting_opaque_rect,
                                         RenderingStats* stats) {
   TRACE_EVENT0("cc", "ContentLayerUpdater::PaintContents");
+
+  printf("ContentLayerUpdater::PaintContents\n");
+
   canvas->save();
   canvas->translate(SkFloatToScalar(-content_rect.x()),
                     SkFloatToScalar(-content_rect.y()));
@@ -56,14 +59,18 @@ void ContentLayerUpdater::PaintContents(SkCanvas* canvas,
   canvas->clipRect(layer_sk_rect);
 
   gfx::RectF opaque_layer_rect;
-  base::TimeTicks paint_begin_time;
-  if (stats)
-    paint_begin_time = base::TimeTicks::Now();
+
+  base::TimeTicks start_time =
+      rendering_stats_instrumentation_->StartRecording();
+
   painter_->Paint(canvas, layer_rect, &opaque_layer_rect);
-  if (stats) {
-    stats->total_paint_time += base::TimeTicks::Now() - paint_begin_time;
-    stats->total_pixels_painted += content_rect.width() * content_rect.height();
-  }
+
+  base::TimeDelta duration =
+      rendering_stats_instrumentation_->EndRecording(start_time);
+  rendering_stats_instrumentation_->AddPaint(
+      duration,
+      content_rect.width() * content_rect.height());
+
   canvas->restore();
 
   gfx::RectF opaque_content_rect = gfx::ScaleRect(