cc: Add SwapPromiseManager and SurfaceSequenceGenerator.

cc/layers/surface_layer.cc

 // Copyright 2014 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/layers/surface_layer.h"
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/layers/surface_layer_impl.h"
 #include "cc/output/swap_promise.h"
-#include "cc/trees/layer_tree_host.h"
+#include "cc/trees/surface_sequence_generator.h"
+#include "cc/trees/swap_promise_manager.h"
 
 namespace cc {
 
 class SatisfySwapPromise : public SwapPromise {
  public:
   SatisfySwapPromise(SurfaceSequence sequence,
                      const SurfaceLayer::SatisfyCallback& satisfy_callback)
       : sequence_(sequence), satisfy_callback_(satisfy_callback) {}
 
   ~SatisfySwapPromise() override {}
@@ skipping 23 matching lines @@
       new SurfaceLayer(satisfy_callback, require_callback));
 }
 
 SurfaceLayer::SurfaceLayer(const SatisfyCallback& satisfy_callback,
                            const RequireCallback& require_callback)
     : surface_scale_(1.f),
       satisfy_callback_(satisfy_callback),
       require_callback_(require_callback) {}
 
 SurfaceLayer::~SurfaceLayer() {
-  DCHECK(!layer_tree_host());
+  DCHECK(!GetLayerTree());
   DCHECK(destroy_sequence_.is_null());
 }
 
 void SurfaceLayer::SetSurfaceId(const SurfaceId& surface_id,
                                 float scale,
                                 const gfx::Size& size) {
   SatisfyDestroySequence();
   surface_id_ = surface_id;
   surface_size_ = size;
   surface_scale_ = scale;
@@ skipping 28 matching lines @@
   TRACE_EVENT0("cc", "SurfaceLayer::PushPropertiesTo");
   SurfaceLayerImpl* layer_impl = static_cast<SurfaceLayerImpl*>(layer);
 
   layer_impl->SetSurfaceId(surface_id_);
   layer_impl->SetSurfaceSize(surface_size_);
   layer_impl->SetSurfaceScale(surface_scale_);
 }
 
 void SurfaceLayer::CreateNewDestroySequence() {
   DCHECK(destroy_sequence_.is_null());
-  if (layer_tree_host()) {
-    destroy_sequence_ = layer_tree_host()->CreateSurfaceSequence();
+  if (GetLayerTree()) {
+    destroy_sequence_ =
+        GetLayerTree()->GetSurfaceSequenceGenerator()->CreateSurfaceSequence();
     require_callback_.Run(surface_id_, destroy_sequence_);
   }
 }
 
 void SurfaceLayer::SatisfyDestroySequence() {
   if (!layer_tree_host())
     return;
   DCHECK(!destroy_sequence_.is_null());
   std::unique_ptr<SatisfySwapPromise> satisfy(
       new SatisfySwapPromise(destroy_sequence_, satisfy_callback_));
-  layer_tree_host()->QueueSwapPromise(std::move(satisfy));
+  GetLayerTree()->GetSwapPromiseManager()->QueueSwapPromise(std::move(satisfy));
   destroy_sequence_ = SurfaceSequence();
 }
 
 }  // namespace cc