Add DisplayScheduler for Surfaces

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"
@@ skipping 110 matching lines @@
 
 base::TimeTicks Scheduler::Now() const {
   base::TimeTicks now = gfx::FrameTime::Now();
   TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("cc.debug.scheduler.now"),
                "Scheduler::Now",
                "now",
                now);
   return now;
 }
 
+void Scheduler::SetAuthoritativeVSyncInterval(const base::TimeDelta& interval) {
+  authoritative_vsync_interval_ = interval;
+  if (vsync_observer_)
+    vsync_observer_->OnUpdateVSyncParameters(last_vsync_timebase_, interval);
+}
+
 void Scheduler::CommitVSyncParameters(base::TimeTicks timebase,
                                       base::TimeDelta interval) {
+  TRACE_EVENT2("cc", "Scheduler::CommitVSyncParameters", "timebase",
+               (timebase - base::TimeTicks()).InSecondsF(), "interval",
+               interval.InSecondsF());
+
   if (authoritative_vsync_interval_ != base::TimeDelta()) {
     interval = authoritative_vsync_interval_;
   } else if (interval == base::TimeDelta()) {
     // TODO(brianderson): We should not be receiving 0 intervals.
     interval = BeginFrameArgs::DefaultInterval();
   }
 
   last_vsync_timebase_ = timebase;
 
   if (vsync_observer_)
@@ skipping 244 matching lines @@
     BeginImplFrameWithDeadline(adjusted_args);
   }
   return true;
 }
 
 void Scheduler::SetChildrenNeedBeginFrames(bool children_need_begin_frames) {
   state_machine_.SetChildrenNeedBeginFrames(children_need_begin_frames);
   ProcessScheduledActions();
 }
 
-void Scheduler::SetAuthoritativeVSyncInterval(const base::TimeDelta& interval) {
-  authoritative_vsync_interval_ = interval;
-  if (vsync_observer_)
-    vsync_observer_->OnUpdateVSyncParameters(last_vsync_timebase_, interval);
-}
-
 void Scheduler::OnDrawForOutputSurface() {
   DCHECK(settings_.using_synchronous_renderer_compositor);
   DCHECK_EQ(state_machine_.begin_impl_frame_state(),
             SchedulerStateMachine::BEGIN_IMPL_FRAME_STATE_IDLE);
   DCHECK(!BeginImplFrameDeadlinePending());
 
   state_machine_.OnBeginImplFrameDeadline();
   ProcessScheduledActions();
 
   state_machine_.OnBeginImplFrameIdle();
@@ skipping 411 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