exo: CompositorFrameSink code cleanup.

components/exo/compositor_frame_sink.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 "components/exo/compositor_frame_sink.h"
 
 #include "base/memory/ptr_util.h"
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace exo {
 
 ////////////////////////////////////////////////////////////////////////////////
 // ExoComopositorFrameSink, public:
 
-// static
-void CompositorFrameSink::Create(
-    const cc::FrameSinkId& frame_sink_id,
-    cc::SurfaceManager* surface_manager,
-    cc::mojom::MojoCompositorFrameSinkClientPtr client,
-    cc::mojom::MojoCompositorFrameSinkRequest request) {
-  std::unique_ptr<CompositorFrameSink> impl =
-      base::MakeUnique<CompositorFrameSink>(frame_sink_id, surface_manager,
-                                            std::move(client));
-  CompositorFrameSink* compositor_frame_sink = impl.get();
-  compositor_frame_sink->binding_ =
-      mojo::MakeStrongBinding(std::move(impl), std::move(request));
-}
-
 CompositorFrameSink::CompositorFrameSink(
     const cc::FrameSinkId& frame_sink_id,
     cc::SurfaceManager* surface_manager,
     cc::mojom::MojoCompositorFrameSinkClientPtr client)
     : support_(this, surface_manager, frame_sink_id, nullptr, nullptr),
       client_(std::move(client)) {}
 
 CompositorFrameSink::~CompositorFrameSink() {}
 
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 31 matching lines @@
 }
 
 void CompositorFrameSink::Satisfy(const cc::SurfaceSequence& sequence) {
   support_.Satisfy(sequence);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // cc::CompositorFrameSinkSupportClient overrides:
 
 void CompositorFrameSink::DidReceiveCompositorFrameAck() {
-  if (client_)
-    client_->DidReceiveCompositorFrameAck();
+  client_->DidReceiveCompositorFrameAck();
 }
 
 void CompositorFrameSink::OnBeginFrame(const cc::BeginFrameArgs& args) {
-  if (client_)
-    client_->OnBeginFrame(args);
+  client_->OnBeginFrame(args);
 }
 
 void CompositorFrameSink::ReclaimResources(
     const cc::ReturnedResourceArray& resources) {
-  if (client_)
-    client_->ReclaimResources(resources);
+  client_->ReclaimResources(resources);
 }
 
 void CompositorFrameSink::WillDrawSurface() {
-  if (client_)
-    client_->WillDrawSurface();
+  client_->WillDrawSurface();
 }
 
 }  // namespace exo