Revert of Remove default begin frame sources from the renderer

cc/trees/layer_tree_host_impl_unittest.cc

 // Copyright 2011 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/trees/layer_tree_host_impl.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <cmath>
@@ skipping 113 matching lines @@
   void SetUp() override {
     CreateHostImpl(DefaultSettings(), CreateOutputSurface());
   }
 
   void TearDown() override {
     if (host_impl_)
       host_impl_->ReleaseOutputSurface();
   }
 
   void DidLoseOutputSurfaceOnImplThread() override {}
+  void CommitVSyncParameters(base::TimeTicks timebase,
+                             base::TimeDelta interval) override {}
   void SetBeginFrameSource(BeginFrameSource* source) override {}
   void SetEstimatedParentDrawTime(base::TimeDelta draw_time) override {}
   void DidSwapBuffersCompleteOnImplThread() override {}
   void OnCanDrawStateChanged(bool can_draw) override {
     on_can_draw_state_changed_called_ = true;
   }
   void NotifyReadyToActivate() override {
     did_notify_ready_to_activate_ = true;
     host_impl_->ActivateSyncTree();
   }
@@ skipping 11003 matching lines @@
   EXPECT_TRUE(host_impl_->use_gpu_rasterization());
 
   // Re-initialize with a software output surface.
   output_surface_ = FakeOutputSurface::CreateDelegatingSoftware();
   host_impl_->InitializeRenderer(output_surface_.get());
   EXPECT_FALSE(host_impl_->use_gpu_rasterization());
 }
 
 }  // namespace
 }  // namespace cc