Remove gfx::FrameTime for a single clock source

cc/scheduler/scheduler.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 <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/logging.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/single_thread_task_runner.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/debug/devtools_instrumentation.h"
 #include "cc/debug/traced_value.h"
 #include "cc/scheduler/delay_based_time_source.h"
-#include "ui/gfx/frame_time.h"
 
 namespace cc {
 
 BeginFrameSource* SchedulerFrameSourcesConstructor::ConstructPrimaryFrameSource(
     Scheduler* scheduler) {
   if (scheduler->settings_.use_external_begin_frame_source) {
     TRACE_EVENT1("cc",
                  "Scheduler::Scheduler()",
                  "PrimaryFrameSource",
                  "ExternalBeginFrameSource");
@@ skipping 85 matching lines @@
   SetThrottleFrameProduction(scheduler_settings.throttle_frame_production);
 }
 
 Scheduler::~Scheduler() {
   if (frame_source_->NeedsBeginFrames())
     frame_source_->SetNeedsBeginFrames(false);
   frame_source_->SetActiveSource(nullptr);
 }
 
 base::TimeTicks Scheduler::Now() const {
-  base::TimeTicks now = gfx::FrameTime::Now();
+  base::TimeTicks now = base::TimeTicks::Now();
   TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("cc.debug.scheduler.now"),
                "Scheduler::Now",
                "now",
                now);
   return now;
 }
 
 void Scheduler::CommitVSyncParameters(base::TimeTicks timebase,
                                       base::TimeDelta interval) {
   if (authoritative_vsync_interval_ != base::TimeDelta()) {
@@ skipping 688 matching lines @@
 }
 
 bool Scheduler::IsBeginMainFrameSentOrStarted() const {
   return (state_machine_.commit_state() ==
               SchedulerStateMachine::COMMIT_STATE_BEGIN_MAIN_FRAME_SENT ||
           state_machine_.commit_state() ==
               SchedulerStateMachine::COMMIT_STATE_BEGIN_MAIN_FRAME_STARTED);
 }
 
 }  // namespace cc