Add fixed raster scale use counter histograms.

cc/trees/layer_tree_host_unittest_remote_server.cc

 // Copyright 2016 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 <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "cc/test/fake_image_serialization_processor.h"
 #include "cc/test/test_task_graph_runner.h"
@@ skipping 38 matching lines @@
                            float page_scale,
                            float top_controls_delta) override {}
   void RequestNewOutputSurface() override { NOTREACHED(); }
   void DidInitializeOutputSurface() override { NOTREACHED(); }
   void DidFailToInitializeOutputSurface() override { NOTREACHED(); }
   void WillCommit() override {}
   void DidCommit() override {}
   void DidCommitAndDrawFrame() override {}
   void DidCompleteSwapBuffers() override {}
   void DidCompletePageScaleAnimation() override {}
+  void ReportFixedRasterScaleUseCounters(
+      bool has_blurry_content,
+      bool has_potential_performance_regression) override {}
 
   // RemoteProtoChannel implementation
   void SetProtoReceiver(RemoteProtoChannel::ProtoReceiver* receiver) override {
     receiver_ = receiver;
   }
   void SendCompositorProto(const proto::CompositorMessage& proto) override {}
 
   int calls_received_;
   TestTaskGraphRunner task_graph_runner_;
   LayerTreeSettings settings_;
@@ skipping 23 matching lines @@
   begin_frame_state.reset(new BeginMainFrameAndCommitState());
   begin_frame_state->scroll_info.reset(new ScrollAndScaleSet());
 
   static_cast<ProxyMain*>(layer_tree_host_->proxy())
       ->BeginMainFrame(std::move(begin_frame_state));
   EXPECT_EQ(calls_received_, 1);
 }
 
 }  // namespace
 }  // namespace cc