cc: Add MainAndImplFrameTimeDelta UMA.

cc/scheduler/scheduler_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/scheduler/scheduler.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 245 matching lines @@
   ~SchedulerTest() override {}
 
  protected:
   TestScheduler* CreateScheduler() {
     if (scheduler_settings_.use_external_begin_frame_source) {
       fake_external_begin_frame_source_.reset(
           new FakeExternalBeginFrameSource(client_.get()));
     }
 
     scoped_ptr<FakeCompositorTimingHistory> fake_compositor_timing_history =
-        FakeCompositorTimingHistory::Create();
+        FakeCompositorTimingHistory::Create(
+            scheduler_settings_.using_synchronous_renderer_compositor);
     fake_compositor_timing_history_ = fake_compositor_timing_history.get();
 
     scheduler_ = TestScheduler::Create(
         now_src_.get(), client_.get(), scheduler_settings_, 0,
         task_runner_.get(), fake_external_begin_frame_source_.get(),
         std::move(fake_compositor_timing_history));
     DCHECK(scheduler_);
     client_->set_scheduler(scheduler_.get());
 
     // Use large estimates by default to avoid latency recovery in most tests.
@@ skipping 3398 matching lines @@
 }
 
 TEST_F(SchedulerTest, BeginMainFrameOnCriticalPath_AHS) {
   EXPECT_FALSE(BeginMainFrameOnCriticalPath(
       SMOOTHNESS_TAKES_PRIORITY,
       ScrollHandlerState::SCROLL_AFFECTS_SCROLL_HANDLER, kSlowDuration));
 }
 
 }  // namespace
 }  // namespace cc