[Mac] Merge single-function file about_ipc_dialog.{h,mm} into about_ipc_bridge.{h,mm}.

chrome/browser/ui/cocoa/about_ipc_bridge.h

-// Copyright (c) 2009 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 CHROME_BROWSER_UI_COCOA_ABOUT_IPC_BRIDGE_H_
-#define CHROME_BROWSER_UI_COCOA_ABOUT_IPC_BRIDGE_H_
-#pragma once
-
-#include "ipc/ipc_logging.h"
-#include "ipc/ipc_message_utils.h"
-
-#if defined(IPC_MESSAGE_LOG_ENABLED)
-
-@class AboutIPCController;
-
-// On Windows, the AboutIPCDialog is a views::View.  On Mac we have a
-// Cocoa dialog.  This class bridges from C++ to ObjC.
-class AboutIPCBridge : public IPC::Logging::Consumer {
- public:
-  AboutIPCBridge(AboutIPCController* controller) : controller_(controller) { }
-  virtual ~AboutIPCBridge() { }
-
-  // IPC::Logging::Consumer implementation.
-  virtual void Log(const IPC::LogData& data);
-
- private:
-  AboutIPCController* controller_;  // weak; owns me
-  DISALLOW_COPY_AND_ASSIGN(AboutIPCBridge);
-};
-
-#endif  // IPC_MESSAGE_LOG_ENABLED
-
-#endif  // CHROME_BROWSER_UI_COCOA_ABOUT_IPC_BRIDGE_H_