Remove IsDIPEnabled from Screen

mojo/aura/screen_mojo.h

 // Copyright (c) 2014 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 MOJO_AURA_SCREEN_MOJO_H_
 #define MOJO_AURA_SCREEN_MOJO_H_
 
 #include "base/macros.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
 
 namespace gfx {
 class Rect;
 class Transform;
 }
 
 namespace mojo {
 
 // A minimal implementation of gfx::Screen for mojo.
 class ScreenMojo : public gfx::Screen {
  public:
   static ScreenMojo* Create();
   ~ScreenMojo() override;
 
  protected:
   // gfx::Screen overrides:
-  bool IsDIPEnabled() override;
   gfx::Point GetCursorScreenPoint() override;
   gfx::NativeWindow GetWindowUnderCursor() override;
   gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) override;
   int GetNumDisplays() const override;
   std::vector<gfx::Display> GetAllDisplays() const override;
   gfx::Display GetDisplayNearestWindow(gfx::NativeView view) const override;
   gfx::Display GetDisplayNearestPoint(const gfx::Point& point) const override;
   gfx::Display GetDisplayMatching(const gfx::Rect& match_rect) const override;
   gfx::Display GetPrimaryDisplay() const override;
   void AddObserver(gfx::DisplayObserver* observer) override;
   void RemoveObserver(gfx::DisplayObserver* observer) override;
 
  private:
   explicit ScreenMojo(const gfx::Rect& screen_bounds);
 
   gfx::Display display_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenMojo);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_AURA_SCREEN_MOJO_H_