blimp: Add mode to use the updated compositing path on the client.

blimp/client/core/render_widget/blimp_document.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/core/render_widget/blimp_document.h"
 
+#include "base/command_line.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "blimp/client/core/compositor/blimp_compositor_dependencies.h"
 #include "blimp/client/core/input/blimp_input_manager.h"
 #include "blimp/client/core/render_widget/blimp_document_manager.h"
+#include "blimp/client/core/switches/blimp_client_switches.h"
 #include "cc/layers/layer.h"
 
 namespace blimp {
 namespace client {
 
 BlimpDocument::BlimpDocument(int document_id,
                              BlimpCompositorDependencies* compositor_deps,
                              BlimpDocumentManager* document_manager)
     : BlimpDocument(document_id,
-                    base::MakeUnique<BlimpCompositor>(compositor_deps, this),
+                    base::MakeUnique<BlimpCompositor>(
+                        compositor_deps,
+                        this,
+                        base::CommandLine::ForCurrentProcess()->HasSwitch(
+                            switches::kEnableUpdatedCompositingPath)),
                     compositor_deps,
                     document_manager) {}
 
 BlimpDocument::BlimpDocument(int document_id,
                              std::unique_ptr<BlimpCompositor> compositor,
                              BlimpCompositorDependencies* compositor_deps,
                              BlimpDocumentManager* document_manager)
     : document_id_(document_id),
       compositor_(std::move(compositor)),
       manager_(document_manager) {
@@ skipping 28 matching lines @@
   manager_->SendCompositorMessage(document_id_, message);
 }
 
 void BlimpDocument::SendWebGestureEvent(
     const blink::WebGestureEvent& gesture_event) {
   manager_->SendWebGestureEvent(document_id_, gesture_event);
 }
 
 }  // namespace client
 }  // namespace blimp