cc: Make separate interface for BeginFrame ipc from OutputSurface

ui/compositor/compositor.cc

 // Copyright (c) 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 "ui/compositor/compositor.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
 #include "base/sys_info.h"
 #include "cc/base/latency_info_swap_promise.h"
 #include "cc/base/switches.h"
 #include "cc/input/input_handler.h"
 #include "cc/layers/layer.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/output/context_provider.h"
+#include "cc/scheduler/begin_frame_source.h"
 #include "cc/surfaces/surface_id_allocator.h"
 #include "cc/trees/layer_tree_host.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/compositor/compositor_observer.h"
 #include "ui/compositor/compositor_switches.h"
 #include "ui/compositor/compositor_vsync_manager.h"
 #include "ui/compositor/dip_util.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animator_collection.h"
 #include "ui/gfx/frame_time.h"
@@ skipping 25 matching lines @@
 
 void CompositorLock::CancelLock() {
   if (!compositor_)
     return;
   compositor_->UnlockCompositor();
   compositor_ = NULL;
 }
 
 }  // namespace ui
 
-namespace {}  // namespace
-
 namespace ui {
 
 class SatisfySwapPromise : public cc::SwapPromise {
  public:
   explicit SatisfySwapPromise(uint32_t id) : id_(id) {}
 
  private:
   virtual void DidSwap(cc::CompositorFrameMetadata* metadata) OVERRIDE {
     metadata->satisfies_sequences.push_back(id_);
   }
@@ skipping 77 matching lines @@
   settings.use_zero_copy = IsUIZeroCopyEnabled();
   settings.single_thread_proxy_scheduler = false;
 
   base::TimeTicks before_create = base::TimeTicks::Now();
   if (compositor_thread_loop_.get()) {
     host_ = cc::LayerTreeHost::CreateThreaded(
         this,
         context_factory_->GetSharedBitmapManager(),
         settings,
         task_runner_,
-        compositor_thread_loop_);
+        compositor_thread_loop_,
+        scoped_ptr<cc::ExternalBeginFrameSource>());
   } else {
     host_ = cc::LayerTreeHost::CreateSingleThreaded(
         this,
         this,
         context_factory_->GetSharedBitmapManager(),
         settings,
-        task_runner_);
+        task_runner_,
+        scoped_ptr<cc::ExternalBeginFrameSource>());
   }
   UMA_HISTOGRAM_TIMES("GPU.CreateBrowserCompositor",
                       base::TimeTicks::Now() - before_create);
   host_->SetRootLayer(root_web_layer_);
   host_->SetLayerTreeHostClientReady();
 }
 
 Compositor::~Compositor() {
   TRACE_EVENT0("shutdown", "Compositor::destructor");
 
@@ skipping 288 matching lines @@
     // Call ScheduleDraw() instead of Draw() in order to allow other
     // CompositorObservers to be notified before starting another
     // draw cycle.
     ScheduleDraw();
   }
   FOR_EACH_OBSERVER(
       CompositorObserver, observer_list_, OnCompositingEnded(this));
 }
 
 }  // namespace ui