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

chrome/browser/ui/cocoa/about_ipc_dialog.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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_DIALOG_H_
 #define CHROME_BROWSER_UI_COCOA_ABOUT_IPC_DIALOG_H_
 #pragma once
 
-#include "ipc/ipc_message.h"
+#include "ipc/ipc_logging.h"
+#include "ipc/ipc_message_utils.h"
 
 #if defined(IPC_MESSAGE_LOG_ENABLED)
 
+#ifdef __OBJC__
+@class AboutIPCController;
+#else
+class AboutIPCController;
+#endif
+
 namespace AboutIPCDialog {
 // The dialog is a singleton. If the dialog is already opened, it won't do
 // anything, so you can just blindly call this function all you want.
 // RunDialog() is Called from chrome/browser/browser_about_handler.cc
 // in response to an about:ipc URL.
 void RunDialog();
+}
+
+// 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  /* IPC_MESSAGE_LOG_ENABLED */
-
-#endif  /* CHROME_BROWSER_UI_COCOA_ABOUT_IPC_DIALOG_H_ */
+#endif  // CHROME_BROWSER_UI_COCOA_ABOUT_IPC_DIALOG_H_