Add BlimpDocument, pull out functions in BlimpCompositor.

blimp/client/core/contents/blimp_contents_view_impl.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/contents/blimp_contents_view_impl.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "blimp/client/core/contents/blimp_contents_impl.h"
@@ skipping 19 matching lines @@
 scoped_refptr<cc::Layer> BlimpContentsViewImpl::GetLayer() {
   return contents_layer_;
 }
 
 void BlimpContentsViewImpl::SetSizeAndScale(const gfx::Size& size,
                                             float device_scale_factor) {
   blimp_contents_->SetSizeAndScale(size, device_scale_factor);
 }
 
 bool BlimpContentsViewImpl::OnTouchEvent(const ui::MotionEvent& motion_event) {
-  return blimp_contents_->compositor_manager()->OnTouchEvent(motion_event);
+  return blimp_contents_->document_manager()->OnTouchEvent(motion_event);
 }
 
 void BlimpContentsViewImpl::CopyFromCompositingSurface(
     const ReadbackRequestCallback& callback) {
-  blimp_contents_->compositor_manager()->NotifyWhenDonePendingCommits(
+  blimp_contents_->document_manager()->NotifyWhenDonePendingCommits(
       base::Bind(&BlimpContentsViewImpl::StartReadbackRequest,
                  weak_ptr_factory_.GetWeakPtr(), callback));
 }
 
 void BlimpContentsViewImpl::StartReadbackRequest(
     const ReadbackRequestCallback& callback) {
   std::unique_ptr<cc::CopyOutputRequest> request =
       cc::CopyOutputRequest::CreateBitmapRequest(
           base::Bind(&BlimpContentsViewImpl::OnReadbackComplete,
                      weak_ptr_factory_.GetWeakPtr(), callback));
   contents_layer_->RequestCopyOfOutput(std::move(request));
 }
 
 void BlimpContentsViewImpl::OnReadbackComplete(
     const ReadbackRequestCallback& callback,
     std::unique_ptr<cc::CopyOutputResult> result) {
   callback.Run(result->TakeBitmap());
 }
 
 }  // namespace client
 }  // namespace blimp