[Aura] Translate web contents area to nearest physical pixel boundary

content/browser/renderer_host/render_widget_host_view_aura.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_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 342 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraCopyRequestTest,
                            DestroyedAfterCopyRequest);
   FRIEND_TEST_ALL_PREFIXES(RenderWidgetHostViewAuraTest,
                            VisibleViewportTest);
 
   class WindowObserver;
   friend class WindowObserver;
 
   void UpdateCursorIfOverSelf();
 
+  void SnapToPhysicalPixelBoundary();
+
   // Set the bounds of the window and handle size changes.  Assumes the caller
   // has already adjusted the origin of |rect| to conform to whatever coordinate
   // space is required by the aura::Window.
   void InternalSetBounds(const gfx::Rect& rect);
 
 #if defined(OS_WIN)
   bool UsesNativeWindowFrame() const;
 #endif
 
   ui::InputMethod* GetInputMethod() const;
@@ skipping 191 matching lines @@
   // etc.
   scoped_ptr<content::LegacyRenderWidgetHostHWND>
       legacy_render_widget_host_HWND_;
 #endif
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_