Plumbs through screen size and scale factor to html_viewer

components/native_viewport/platform_viewport_win.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/native_viewport/platform_viewport.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
 #include "mojo/converters/input_events/input_events_type_converters.h"
 #include "ui/events/event.h"
@@ skipping 22 matching lines @@
 
   ~PlatformViewportWin() {
     // Destroy the platform-window while |this| is still alive.
     platform_window_.reset();
   }
 
  private:
   // Overridden from PlatformViewport:
   void Init(const gfx::Rect& bounds) override {
     metrics_ = mojo::ViewportMetrics::New();
+    // TODO(sky): make density real.
+    metrics_->device_pixel_ratio = 1.f;
     metrics_->size = mojo::Size::From(bounds.size());
     platform_window_.reset(new ui::WinWindow(this, bounds));
   }
 
   void Show() override {
     platform_window_->Show();
   }
 
   void Hide() override {
     platform_window_->Hide();
@@ skipping 57 matching lines @@
   }
 
   void OnWindowStateChanged(ui::PlatformWindowState state) override {
   }
 
   void OnLostCapture() override {
   }
 
   void OnAcceleratedWidgetAvailable(
       gfx::AcceleratedWidget widget) override {
-    delegate_->OnAcceleratedWidgetAvailable(widget);
+    delegate_->OnAcceleratedWidgetAvailable(widget,
+                                            metrics_->device_pixel_ratio);
   }
 
   void OnActivationChanged(bool active) override {}
 
   scoped_ptr<ui::PlatformWindow> platform_window_;
   Delegate* delegate_;
   mojo::ViewportMetricsPtr metrics_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformViewportWin);
 };
 
 // static
 scoped_ptr<PlatformViewport> PlatformViewport::Create(Delegate* delegate) {
   return scoped_ptr<PlatformViewport>(new PlatformViewportWin(delegate)).Pass();
 }
 
 }  // namespace native_viewport