Remove IsDIPEnabled from Screen

ui/gfx/screen.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 UI_GFX_SCREEN_H_
 #define UI_GFX_SCREEN_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 32 matching lines @@
   // may be NULL.
   static Screen* GetScreenByType(ScreenType type);
 
   // Sets the global ScreenTypeDelegate. May be left unset if the platform
   // uses only the _NATIVE ScreenType.
   static void SetScreenTypeDelegate(ScreenTypeDelegate* delegate);
 
   Screen();
   virtual ~Screen();
 
-  // Returns true if DIP is enabled.
-  virtual bool IsDIPEnabled() = 0;
-
   // Returns the current absolute position of the mouse pointer.
   virtual gfx::Point GetCursorScreenPoint() = 0;
 
   // Returns the window under the cursor.
   virtual gfx::NativeWindow GetWindowUnderCursor() = 0;
 
   // Returns the window at the given screen coordinate |point|.
   virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) = 0;
 
   // Returns the number of displays.
@@ skipping 26 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Screen);
 };
 
 Screen* CreateNativeScreen();
 
 }  // namespace gfx
 
 #endif  // UI_GFX_SCREEN_H_