cc: Remove background ticking from LTHI.

cc/test/scheduler_test_common.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/test/scheduler_test_common.h"
 
 #include <string>
 
 #include "base/logging.h"
 
@@ skipping 80 matching lines @@
     DCHECK(!scheduler->vsync_observer_);
     scheduler->vsync_observer_ = synthetic_source.get();
 
     DCHECK(!scheduler->primary_frame_source_internal_);
     scheduler->primary_frame_source_internal_ = synthetic_source.Pass();
     return scheduler->primary_frame_source_internal_.get();
   }
 }
 
 BeginFrameSource*
-TestSchedulerFrameSourcesConstructor::ConstructBackgroundFrameSource(
-    Scheduler* scheduler) {
-  TRACE_EVENT1(
-      "cc",
-      "TestSchedulerFrameSourcesConstructor::ConstructBackgroundFrameSource",
-      "source",
-      "TestSyntheticBeginFrameSource");
-  DCHECK(!(scheduler->background_frame_source_internal_));
-  scheduler->background_frame_source_internal_ =
-      TestSyntheticBeginFrameSource::Create(
-          now_src_, test_task_runner_, base::TimeDelta::FromSeconds(1));
-  return scheduler->background_frame_source_internal_.get();
-}
-
-BeginFrameSource*
 TestSchedulerFrameSourcesConstructor::ConstructUnthrottledFrameSource(
     Scheduler* scheduler) {
   TRACE_EVENT1(
       "cc",
       "TestSchedulerFrameSourcesConstructor::ConstructUnthrottledFrameSource",
       "source", "TestBackToBackBeginFrameSource");
   DCHECK(!scheduler->unthrottled_frame_source_internal_);
   scheduler->unthrottled_frame_source_internal_ =
       TestBackToBackBeginFrameSource::Create(now_src_, test_task_runner_);
   return scheduler->unthrottled_frame_source_internal_.get();
@@ skipping 17 matching lines @@
 }
 
 base::TimeTicks TestScheduler::Now() const {
   return now_src_->Now();
 }
 
 TestScheduler::~TestScheduler() {
 }
 
 }  // namespace cc