Rename PlatformScreen to ScreenManager.

services/ui/display/platform_screen.h

-// Copyright 2016 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 SERVICES_UI_DISPLAY_PLATFORM_SCREEN_H_
-#define SERVICES_UI_DISPLAY_PLATFORM_SCREEN_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "services/ui/display/platform_screen_delegate.h"
-
-namespace service_manager {
-class InterfaceRegistry;
-}
-
-namespace display {
-
-// PlatformScreen provides the necessary functionality to configure all
-// attached physical displays.
-class PlatformScreen {
- public:
-  PlatformScreen();
-  virtual ~PlatformScreen();
-
-  // Creates a singleton PlatformScreen instance.
-  static std::unique_ptr<PlatformScreen> Create();
-  static PlatformScreen* GetInstance();
-
-  // Registers Mojo interfaces provided.
-  virtual void AddInterfaces(service_manager::InterfaceRegistry* registry) = 0;
-
-  // Triggers initial display configuration to start. On device this will
-  // configuration the connected displays. Off device this will create one or
-  // more fake displays and pretend to configure them. A non-null |delegate|
-  // must be provided that will receive notifications when displays are added,
-  // removed or modified.
-  virtual void Init(PlatformScreenDelegate* delegate) = 0;
-
-  // Handle requests from the platform to close a display.
-  virtual void RequestCloseDisplay(int64_t display_id) = 0;
-
-  virtual int64_t GetPrimaryDisplayId() const = 0;
-
- private:
-  static PlatformScreen* instance_;  // Instance is not owned.
-
-  DISALLOW_COPY_AND_ASSIGN(PlatformScreen);
-};
-
-}  // namespace display
-
-#endif  // SERVICES_UI_DISPLAY_PLATFORM_SCREEN_H_