Invert DSF to map from delegated frame to layer space

content/browser/renderer_host/render_widget_host_view_android.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <map>
 #include <queue>
 
@@ skipping 293 matching lines @@
   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection_;
   scoped_refptr<cc::DelegatedFrameProvider> frame_provider_;
   scoped_refptr<cc::DelegatedRendererLayer> layer_;
 
   // The most recent texture size that was pushed to the texture layer.
   gfx::Size texture_size_in_layer_;
 
   // The most recent content size that was pushed to the texture layer.
   gfx::Size content_size_in_layer_;
 
+  // The device scale of the last received frame.
+  float device_scale_factor_;
+
   // The output surface id of the last received frame.
   uint32_t last_output_surface_id_;
 
   base::WeakPtrFactory<RenderWidgetHostViewAndroid> weak_ptr_factory_;
 
   std::queue<base::Closure> ack_callbacks_;
 
   const bool overscroll_effect_enabled_;
   // Used to render overscroll overlays.
   // Note: |overscroll_effect_| will never be NULL, even if it's never enabled.
@@ skipping 26 matching lines @@
   };
 
   scoped_ptr<LastFrameInfo> last_frame_info_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_