CC Animations: Port UI Browser Compositor to use compositor animation timelines.

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 <utility>
 
 #include "base/bind.h"
 #include "base/command_line.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 "base/trace_event/trace_event.h"
+#include "cc/animation/animation_host.h"
+#include "cc/animation/animation_id_provider.h"
+#include "cc/animation/animation_timeline.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/output/latency_info_swap_promise.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"
@@ skipping 155 matching lines @@
   params.client = this;
   params.shared_bitmap_manager = context_factory_->GetSharedBitmapManager();
   params.gpu_memory_buffer_manager =
       context_factory_->GetGpuMemoryBufferManager();
   params.task_graph_runner = context_factory_->GetTaskGraphRunner();
   params.settings = &settings;
   params.main_task_runner = task_runner_;
   host_ = cc::LayerTreeHost::CreateSingleThreaded(this, &params);
   UMA_HISTOGRAM_TIMES("GPU.CreateBrowserCompositor",
                       base::TimeTicks::Now() - before_create);
+
+  if (settings.use_compositor_animation_timelines) {
+    animation_timeline_ = cc::AnimationTimeline::Create(
+        cc::AnimationIdProvider::NextTimelineId());
+    host_->animation_host()->AddAnimationTimeline(animation_timeline_.get());
+  }
   host_->SetRootLayer(root_web_layer_);
   host_->set_surface_id_namespace(surface_id_allocator_->id_namespace());
   host_->SetVisible(true);
 }
 
 Compositor::~Compositor() {
   TRACE_EVENT0("shutdown", "Compositor::destructor");
 
   CancelCompositorLock();
   DCHECK(!compositor_lock_);
 
   FOR_EACH_OBSERVER(CompositorObserver, observer_list_,
                     OnCompositingShuttingDown(this));
 
   FOR_EACH_OBSERVER(CompositorAnimationObserver, animation_observer_list_,
                     OnCompositingShuttingDown(this));
 
   if (root_layer_)
     root_layer_->ResetCompositor();
 
+  if (animation_timeline_)
+    host_->animation_host()->RemoveAnimationTimeline(animation_timeline_.get());
+
   // Stop all outstanding draws before telling the ContextFactory to tear
   // down any contexts that the |host_| may rely upon.
   host_.reset();
 
   context_factory_->RemoveCompositor(this);
 }
 
 void Compositor::SetOutputSurface(
     scoped_ptr<cc::OutputSurface> output_surface) {
   output_surface_requested_ = false;
   host_->SetOutputSurface(std::move(output_surface));
 }
 
 void Compositor::ScheduleDraw() {
   host_->SetNeedsCommit();
 }
 
 void Compositor::SetRootLayer(Layer* root_layer) {
   if (root_layer_ == root_layer)
     return;
   if (root_layer_)
     root_layer_->ResetCompositor();
   root_layer_ = root_layer;
   root_web_layer_->RemoveAllChildren();
   if (root_layer_)
     root_layer_->SetCompositor(this, root_web_layer_);
 }
 
+cc::AnimationTimeline* Compositor::GetAnimationTimeline() const {
+  return animation_timeline_.get();
+}
+
 void Compositor::SetHostHasTransparentBackground(
     bool host_has_transparent_background) {
   host_->set_has_transparent_background(host_has_transparent_background);
 }
 
 void Compositor::ScheduleFullRedraw() {
   // TODO(enne): Some callers (mac) call this function expecting that it
   // will also commit.  This should probably just redraw the screen
   // from damage and not commit.  ScheduleDraw/ScheduleRedraw need
   // better names.
@@ skipping 252 matching lines @@
                     observer_list_,
                     OnCompositingLockStateChanged(this));
 }
 
 void Compositor::CancelCompositorLock() {
   if (compositor_lock_)
     compositor_lock_->CancelLock();
 }
 
 }  // namespace ui