cc: Move scheduling logic out of OutputSurface

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 1485 matching lines @@
         TRACE_ID_DONT_MANGLE(metadata.latency_info[i].trace_id),
         "SwapBuffers");
   }
   renderer_->SwapBuffers(metadata);
   return true;
 }
 
 void LayerTreeHostImpl::SetNeedsBeginFrame(bool 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.
   UpdateCurrentFrameTime();
 }
 
 gfx::SizeF LayerTreeHostImpl::ComputeInnerViewportContainerSize() const {
   gfx::SizeF dip_size =
@@ skipping 363 matching lines @@
       output_surface.get(), resource_provider.get(), skip_gl_renderer);
 
   if (settings_.impl_side_painting) {
     CreateAndSetTileManager(
         resource_provider.get(),
         output_surface->context_provider().get(),
         GetRendererCapabilities().using_map_image,
         GetRendererCapabilities().allow_rasterize_on_demand);
   }
 
-  if (!settings_.throttle_frame_production) {
-    // Disable VSync
-    output_surface->SetThrottleFrameProduction(false);
-  } else if (!settings_.begin_impl_frame_scheduling_enabled) {
-    // Setup BeginFrameEmulation if it's not supported natively
-    const base::TimeDelta display_refresh_interval =
-      base::TimeDelta::FromMicroseconds(
-          base::Time::kMicrosecondsPerSecond /
-          settings_.refresh_rate);
+  // 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);
 
-    output_surface->InitializeBeginFrameEmulation(
-        proxy_->ImplThreadTaskRunner(),
-        display_refresh_interval);
-  }
+  // TODO(brianderson): Don't use a hard-coded parent draw time.
+  base::TimeDelta parent_draw_time =
+      output_surface->capabilities().adjust_deadline_for_parent
+          ? BeginFrameArgs::DefaultDeadlineAdjustment()
+          : 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);
 
   resource_provider_ = resource_provider.Pass();
   output_surface_ = output_surface.Pass();
 
   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();
 
   resource_provider_->InitializeGL();
 
@@ skipping 1123 matching lines @@
   swap_promise_monitor_.erase(monitor);
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfSetNeedsRedraw() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 }  // namespace cc