Match html canvas which is transferred to OffscreenCanvas to CSS style

ui/android/delegated_frame_host_android.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 "ui/android/delegated_frame_host_android.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/layers/surface_layer.h"
@@ skipping 34 matching lines @@
 
 scoped_refptr<cc::SurfaceLayer> CreateSurfaceLayer(
     cc::SurfaceManager* surface_manager,
     cc::SurfaceId surface_id,
     const gfx::Size surface_size,
     bool surface_opaque) {
   // manager must outlive compositors using it.
   scoped_refptr<cc::SurfaceLayer> layer = cc::SurfaceLayer::Create(
       base::Bind(&SatisfyCallback, base::Unretained(surface_manager)),
       base::Bind(&RequireCallback, base::Unretained(surface_manager)));
-  layer->SetSurfaceId(surface_id, 1.f, surface_size);
+  layer->SetSurfaceId(surface_id, 1.f, surface_size,
+                      false /* strecth_content_to_fill_bounds */);

[danakj, 2016/12/16 14:30:44]

"strecth" => stretch

   layer->SetBounds(surface_size);
   layer->SetIsDrawable(true);
   layer->SetContentsOpaque(surface_opaque);
 
   return layer;
 }
 
 void CopyOutputRequestCallback(
     scoped_refptr<cc::Layer> readback_layer,
     cc::CopyOutputRequest::CopyOutputRequestCallback result_callback,
@@ skipping 201 matching lines @@
         content_size_in_dip.width() < container_size_in_dip_.width() ||
         content_size_in_dip.height() < container_size_in_dip_.height();
   } else {
     background_is_drawable = true;
   }
 
   background_layer_->SetIsDrawable(background_is_drawable);
 }
 
 }  // namespace ui