Remove MessagePumpForGpu

base/message_loop/message_pump_win.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 BASE_MESSAGE_LOOP_MESSAGE_PUMP_WIN_H_
 #define BASE_MESSAGE_LOOP_MESSAGE_PUMP_WIN_H_
 
 #include <windows.h>
 
 #include <list>
@@ skipping 122 matching lines @@
   void HandleTimerMessage();
   void RescheduleTimer();
   bool ProcessNextWindowsMessage();
   bool ProcessMessageHelper(const MSG& msg);
   bool ProcessPumpReplacementMessage();
 
   base::win::MessageWindow message_window_;
 };
 
 //-----------------------------------------------------------------------------
-// MessagePumpForGpu is a simplified version of UI message pump that is
-// optimized for the GPU process. Unlike MessagePumpForUI it doesn't have a
-// hidden window and doesn't handle a situation where a native message pump
-// might take over message processing.
-//
-class BASE_EXPORT MessagePumpForGpu : public MessagePumpWin {
- public:
-  MessagePumpForGpu();
-  ~MessagePumpForGpu() override;
-
-  // Factory methods.
-  static void InitFactory();
-  static std::unique_ptr<MessagePump> CreateMessagePumpForGpu();
-
-  // MessagePump methods:
-  void ScheduleWork() override;
-  void ScheduleDelayedWork(const TimeTicks& delayed_work_time) override;
-
- private:
-  // MessagePumpWin methods:
-  void DoRunLoop() override;
-
-  void WaitForWork();
-  bool ProcessNextMessage();
-
-  win::ScopedHandle event_;
-
-  // Used to help diagnose hangs.
-  // TODO(stanisc): crbug.com/596190: Remove these once the bug is fixed.
-  TimeTicks last_set_event_timeticks_;
-};
-
-//-----------------------------------------------------------------------------
 // MessagePumpForIO extends MessagePumpWin with methods that are particular to a
 // MessageLoop instantiated with TYPE_IO. This version of MessagePump does not
 // deal with Windows mesagges, and instead has a Run loop based on Completion
 // Ports so it is better suited for IO operations.
 //
 class BASE_EXPORT MessagePumpForIO : public MessagePumpWin {
  public:
   struct BASE_EXPORT IOContext {
     IOContext();
     OVERLAPPED overlapped;
@@ skipping 92 matching lines @@
   // The completion port associated with this thread.
   win::ScopedHandle port_;
   // This list will be empty almost always. It stores IO completions that have
   // not been delivered yet because somebody was doing cleanup.
   std::list<IOItem> completed_io_;
 };
 
 }  // namespace base
 
 #endif  // BASE_MESSAGE_LOOP_MESSAGE_PUMP_WIN_H_