Remove IsDIPEnabled from Screen

ash/display/screen_ash.cc

 // Copyright 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.
 
 #include "ash/display/screen_ash.h"
 
 #include "ash/display/display_controller.h"
 #include "ash/display/display_manager.h"
 #include "ash/root_window_controller.h"
 #include "ash/root_window_settings.h"
@@ skipping 53 matching lines @@
 }
 
 class ScreenForShutdown : public gfx::Screen {
  public:
   explicit ScreenForShutdown(ScreenAsh* screen_ash)
       : display_list_(screen_ash->GetAllDisplays()),
         primary_display_(screen_ash->GetPrimaryDisplay()) {
   }
 
   // gfx::Screen overrides:
-  virtual bool IsDIPEnabled() override {
-    return true;
-  }
   virtual gfx::Point GetCursorScreenPoint() override {
     return gfx::Point();
   }
   virtual gfx::NativeWindow GetWindowUnderCursor() override {
     return NULL;
   }
   virtual gfx::NativeWindow GetWindowAtScreenPoint(
       const gfx::Point& point) override {
     return NULL;
   }
@@ skipping 110 matching lines @@
 
 void ScreenAsh::NotifyDisplayAdded(const gfx::Display& display) {
   FOR_EACH_OBSERVER(gfx::DisplayObserver, observers_, OnDisplayAdded(display));
 }
 
 void ScreenAsh::NotifyDisplayRemoved(const gfx::Display& display) {
   FOR_EACH_OBSERVER(
       gfx::DisplayObserver, observers_, OnDisplayRemoved(display));
 }
 
-bool ScreenAsh::IsDIPEnabled() {
-  return true;
-}
-
 gfx::Point ScreenAsh::GetCursorScreenPoint() {
   return aura::Env::GetInstance()->last_mouse_location();
 }
 
 gfx::NativeWindow ScreenAsh::GetWindowUnderCursor() {
   return GetWindowAtScreenPoint(Shell::GetScreen()->GetCursorScreenPoint());
 }
 
 gfx::NativeWindow ScreenAsh::GetWindowAtScreenPoint(const gfx::Point& point) {
   return wm::GetRootWindowAt(point)->GetTopWindowContainingPoint(point);
@@ skipping 59 matching lines @@
 
 void ScreenAsh::RemoveObserver(gfx::DisplayObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 gfx::Screen* ScreenAsh::CloneForShutdown() {
   return new ScreenForShutdown(this);
 }
 
 }  // namespace ash