Add ChromeBrowserMainExtraParts for non main parts.

chrome/browser/chrome_browser_main_extra_parts.h

+// 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_CHROME_BROWSER_MAIN_EXTRA_PARTS_H_
+#define CHROME_BROWSER_CHROME_BROWSER_MAIN_EXTRA_PARTS_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+
+// Interface class for Parts owned by ChromeBrowserMainParts.
+// The default implementation for all methods is empty.
+
+// Most of these map to content::BrowserMainParts methods. This interface is
+// separate to allow stages to be further subdivided for Chrome specific
+// initialization stages (e.g. browser process init, profile init).
+
+class ChromeBrowserMainExtraParts {
+ public:
+  ChromeBrowserMainExtraParts();
+  virtual ~ChromeBrowserMainExtraParts();
+
+  // EarlyInitialization methods.
+  virtual void PreEarlyInitialization();
+  virtual void PostEarlyInitialization();
+
+  // PreMainMessageLoopStart methods.
+  virtual void PreMainMessageLoopStart();
+  virtual void PostMainMessageLoopStart();
+
+  // ToolkitInitialized methods.
+  virtual void ToolkitInitialized();
+
+  // MainMessageLoopRun methods.
+  virtual void PostBrowserProcessInit();
+  virtual void PostProfileInitialized();
+  virtual void PreMainMessageLoopRun();
+  virtual void PostMainMessageLoopRun();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraParts);
+};
+
+#endif  // CHROME_BROWSER_CHROME_BROWSER_MAIN_EXTRA_PARTS_H_