Moves ownership of the cc::Display's BeginFrameSource out of Display.

blimp/client/support/compositor/blimp_embedder_compositor.cc

 // Copyright 2016 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 "blimp/client/support/compositor/blimp_embedder_compositor.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 191 matching lines @@
   context_provider_->BindToCurrentThread();
 
   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager =
       compositor_dependencies_->GetGpuMemoryBufferManager();
   cc::SharedBitmapManager* shared_bitmap_manager = nullptr;
 
   auto task_runner = base::ThreadTaskRunnerHandle::Get();
   auto display_output_surface =
       base::MakeUnique<DisplayOutputSurface>(context_provider_, task_runner);
 
-  std::unique_ptr<cc::SyntheticBeginFrameSource> begin_frame_source(
-      new cc::DelayBasedBeginFrameSource(
-          base::MakeUnique<cc::DelayBasedTimeSource>(task_runner.get())));
+  begin_frame_source_.reset(new cc::DelayBasedBeginFrameSource(
+      base::MakeUnique<cc::DelayBasedTimeSource>(task_runner.get())));
   std::unique_ptr<cc::DisplayScheduler> scheduler(new cc::DisplayScheduler(
-      begin_frame_source.get(), task_runner.get(),
+      task_runner.get(),
       display_output_surface->capabilities().max_frames_pending));
 
   display_ = base::MakeUnique<cc::Display>(
       shared_bitmap_manager, gpu_memory_buffer_manager,
       host_->GetSettings().renderer_settings, frame_sink_id_,
-      std::move(begin_frame_source), std::move(display_output_surface),
+      begin_frame_source_.get(), std::move(display_output_surface),
       std::move(scheduler),
       base::MakeUnique<cc::TextureMailboxDeleter>(task_runner.get()));
   display_->SetVisible(true);
   display_->Resize(viewport_size_in_px_);
 
   // The Browser compositor and display share the same context provider.
   auto compositor_frame_sink = base::MakeUnique<cc::DirectCompositorFrameSink>(
       frame_sink_id_, compositor_dependencies_->GetSurfaceManager(),
       display_.get(), context_provider_, nullptr, gpu_memory_buffer_manager,
       shared_bitmap_manager);
 
   host_->SetCompositorFrameSink(std::move(compositor_frame_sink));
 }
 
 }  // namespace client
 }  // namespace blimp