cc: Switch RenderingStats collection in Layer::Update() to RenderingStatsInstrumentation

cc/layers/scrollbar_layer_unittest.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/scrollbar_layer.h"
 
 #include "cc/animation/scrollbar_animation_controller.h"
 #include "cc/layers/append_quads_data.h"
 #include "cc/layers/scrollbar_layer_impl.h"
 #include "cc/quads/solid_color_draw_quad.h"
@@ skipping 374 matching lines @@
 
     testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
     EXPECT_EQ(scrollbar_layer->layer_tree_host(), layer_tree_host_.get());
 
     PriorityCalculator calculator;
     ResourceUpdateQueue queue;
     OcclusionTracker occlusion_tracker(gfx::Rect(), false);
 
     scrollbar_layer->SetTexturePriorities(calculator);
     layer_tree_host_->contents_texture_manager()->PrioritizeTextures();
-    scrollbar_layer->Update(&queue, &occlusion_tracker, NULL);
+    scrollbar_layer->Update(&queue, &occlusion_tracker);
     EXPECT_EQ(0, queue.FullUploadSize());
     EXPECT_EQ(expected_resources, queue.PartialUploadSize());
 
     testing::Mock::VerifyAndClearExpectations(layer_tree_host_.get());
   }
 
  protected:
   FakeLayerTreeHostClient fake_client_;
   LayerTreeSettings layer_tree_settings_;
   scoped_ptr<MockLayerTreeHost> layer_tree_host_;
@@ skipping 70 matching lines @@
   EXPECT_EQ(10.f, pinch_zoom_horizontal->CurrentPos());
   EXPECT_EQ(100, pinch_zoom_horizontal->TotalSize());
   EXPECT_EQ(30, pinch_zoom_horizontal->Maximum());
   EXPECT_EQ(20.f, pinch_zoom_vertical->CurrentPos());
   EXPECT_EQ(200, pinch_zoom_vertical->TotalSize());
   EXPECT_EQ(50, pinch_zoom_vertical->Maximum());
 }
 
 }  // namespace
 }  // namespace cc