Making OutputSurface a begin frame source and vsync source.

cc/trees/layer_tree_host_impl.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 <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 1413 matching lines @@
   resourceless_software_draw_ = resourceless_software_draw;
 }
 
 void LayerTreeHostImpl::SetNeedsRedrawRect(const gfx::Rect& damage_rect) {
   if (damage_rect.IsEmpty())
     return;
   NotifySwapPromiseMonitorsOfSetNeedsRedraw();
   client_->SetNeedsRedrawRectOnImplThread(damage_rect);
 }
 
-void LayerTreeHostImpl::BeginFrame(const BeginFrameArgs& args) {
-  SendBeginFrame(args);
-}
-
 void LayerTreeHostImpl::DidSwapBuffers() {
   client_->DidSwapBuffersOnImplThread();
 }
 
 void LayerTreeHostImpl::DidSwapBuffersComplete() {
   client_->DidSwapBuffersCompleteOnImplThread();
 }
 
 void LayerTreeHostImpl::ReclaimResources(const CompositorFrameAck* ack) {
   // TODO(piman): We may need to do some validation on this ack before
@@ skipping 217 matching lines @@
     TRACE_EVENT_FLOW_STEP0(
         "input",
         "LatencyInfo.Flow",
         TRACE_ID_DONT_MANGLE(metadata.latency_info[i].trace_id),
         "SwapBuffers");
   }
   renderer_->SwapBuffers(metadata);
   return true;
 }
 
-bool LayerTreeHostImpl::NeedsBeginFrames() const {
-  return needs_begin_frames_;
-}
-
-void LayerTreeHostImpl::SetNeedsBeginFrames(bool enable) {
-  needs_begin_frames_ = enable;
-  if (output_surface_)
-    output_surface_->SetNeedsBeginFrame(enable);
-  else
-    DCHECK(!enable);
-}
-
 void LayerTreeHostImpl::WillBeginImplFrame(const BeginFrameArgs& args) {
   // Sample the frame time now. This time will be used for updating animations
   // when we draw.
   UpdateCurrentBeginFrameArgs(args);
   // Cache the begin impl frame interval
   begin_impl_frame_interval_ = args.interval;
 }
 
 void LayerTreeHostImpl::UpdateInnerViewportContainerSize() {
   LayerImpl* container_layer = active_tree_->InnerViewportContainerLayer();
@@ skipping 399 matching lines @@
                                settings_.use_distance_field_text);
 
   if (output_surface_->capabilities().deferred_gl_initialization)
     EnforceZeroBudget(true);
 
   CreateAndSetRenderer();
 
   if (settings_.impl_side_painting)
     CreateAndSetTileManager();
 
-  // Initialize vsync parameters to sane values.
-  const base::TimeDelta display_refresh_interval =
-      base::TimeDelta::FromMicroseconds(base::Time::kMicrosecondsPerSecond /
-                                        settings_.refresh_rate);
-  CommitVSyncParameters(base::TimeTicks(), display_refresh_interval);
-
   // TODO(brianderson): Don't use a hard-coded parent draw time.
   base::TimeDelta parent_draw_time =
       (!settings_.begin_frame_scheduling_enabled &&
        output_surface_->capabilities().adjust_deadline_for_parent)
           ? BeginFrameArgs::DefaultEstimatedParentDrawTime()
           : base::TimeDelta();
   client_->SetEstimatedParentDrawTime(parent_draw_time);
 
   int max_frames_pending = output_surface_->capabilities().max_frames_pending;
   if (max_frames_pending <= 0)
     max_frames_pending = OutputSurface::DEFAULT_MAX_FRAMES_PENDING;
   client_->SetMaxSwapsPendingOnImplThread(max_frames_pending);
   client_->OnCanDrawStateChanged(CanDraw());
 
   return true;
 }
 
-void LayerTreeHostImpl::CommitVSyncParameters(base::TimeTicks timebase,
-                                              base::TimeDelta interval) {
-  client_->CommitVSyncParameters(timebase, interval);
-}
-
 void LayerTreeHostImpl::DeferredInitialize() {
   DCHECK(output_surface_->capabilities().deferred_gl_initialization);
   DCHECK(settings_.impl_side_painting);
   DCHECK(output_surface_->context_provider());
 
   ReleaseTreeResources();
   renderer_.reset();
   DestroyTileManager();
 
   resource_provider_->InitializeGL();
@@ skipping 1244 matching lines @@
 }
 
 void LayerTreeHostImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
   std::vector<PictureLayerImpl*>::iterator it =
       std::find(picture_layers_.begin(), picture_layers_.end(), layer);
   DCHECK(it != picture_layers_.end());
   picture_layers_.erase(it);
 }
 
 }  // namespace cc