Revert of Mandoline: Remove native_viewport.mojom

components/view_manager/native_viewport/platform_viewport_headless.cc

 // Copyright 2013 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/view_manager/native_viewport/platform_viewport_headless.h"
 
 #include "mojo/converters/geometry/geometry_type_converters.h"
 
 namespace native_viewport {
 
 PlatformViewportHeadless::PlatformViewportHeadless(Delegate* delegate)
     : delegate_(delegate) {
 }
 
 PlatformViewportHeadless::~PlatformViewportHeadless() {
 }
 
 void PlatformViewportHeadless::Init(const gfx::Rect& bounds) {
   metrics_ = mojo::ViewportMetrics::New();
   metrics_->device_pixel_ratio = 1.f;
-  metrics_->size_in_pixels = mojo::Size::From(bounds.size());
+  metrics_->size = mojo::Size::From(bounds.size());
 }
 
 void PlatformViewportHeadless::Show() {
 }
 
 void PlatformViewportHeadless::Hide() {
 }
 
 void PlatformViewportHeadless::Close() {
   delegate_->OnDestroyed();
 }
 
 gfx::Size PlatformViewportHeadless::GetSize() {
-  return metrics_->size_in_pixels.To<gfx::Size>();
+  return metrics_->size.To<gfx::Size>();
 }
 
 void PlatformViewportHeadless::SetBounds(const gfx::Rect& bounds) {
-  delegate_->OnMetricsChanged(bounds.size(), 1.f /* device_scale_factor */);
+  metrics_->size = mojo::Size::From(bounds.size());
+  delegate_->OnMetricsChanged(metrics_->Clone());
 }
 
 // static
 scoped_ptr<PlatformViewport> PlatformViewportHeadless::Create(
     Delegate* delegate) {
   return scoped_ptr<PlatformViewport>(
       new PlatformViewportHeadless(delegate)).Pass();
 }
 
 }  // namespace native_viewport