[NOT FOR COMMIT] Fully replace SkCanvas uses.

content/renderer/render_view_impl.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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <memory>
 
@@ skipping 2633 matching lines @@
       cc::SharedBitmapManager* manager =
           RenderThreadImpl::current()->shared_bitmap_manager();
       std::unique_ptr<cc::SharedBitmap> shared_bitmap =
           manager->AllocateSharedBitmap(canvas_size);
       CHECK(!!shared_bitmap);
       {
         SkBitmap bitmap;
         SkImageInfo info = SkImageInfo::MakeN32Premul(canvas_size.width(),
                                                       canvas_size.height());
         bitmap.installPixels(info, shared_bitmap->pixels(), info.minRowBytes());
-        SkCanvas canvas(bitmap);
+        SkCanvas sk_canvas(bitmap);
+        CdlPassThroughCanvas canvas(&sk_canvas);
 
         // TODO(trchen): Cleanup the device scale factor mess.
         // device scale will be applied in WebKit
         // --> zoom_rect doesn't include device scale,
         //     but WebKit will still draw on zoom_rect * device_scale_factor_
         canvas.scale(new_total_scale / device_scale_factor_,
                      new_total_scale / device_scale_factor_);
         canvas.translate(-zoom_rect.x() * device_scale_factor_,
                          -zoom_rect.y() * device_scale_factor_);
 
@@ skipping 147 matching lines @@
                             INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   }
 
   std::unique_ptr<InputEventAck> ack(
       new InputEventAck(InputEventAckSource::MAIN_THREAD, input_event->type,
                         INPUT_EVENT_ACK_STATE_NOT_CONSUMED));
   OnInputEventAck(std::move(ack));
 }
 
 }  // namespace content