Move implementation from header to source.

chrome/browser/browser.h

 // Copyright (c) 2010 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_BROWSER_H_
 #define CHROME_BROWSER_BROWSER_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 712 matching lines @@
                             const NavigationEntry::SSLStatus& ssl,
                             bool show_history);
   virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
                                         bool* is_keyboard_shortcut);
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
   virtual void ShowRepostFormWarningDialog(TabContents* tab_contents);
   virtual void ShowContentSettingsWindow(ContentSettingsType content_type);
   virtual bool ShouldAddNavigationsToHistory() const;
   virtual void OnDidGetApplicationInfo(TabContents* tab_contents,
                                        int32 page_id);
-  virtual Browser* GetBrowser() { return this; }
+  virtual Browser* GetBrowser();
 
   // Overridden from SelectFileDialog::Listener:
   virtual void FileSelected(const FilePath& path, int index, void* params);
 
   // Overridden from NotificationObserver:
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
   // Overridden from ProfileSyncServiceObserver:
@@ skipping 316 matching lines @@
   mutable BooleanPrefMember use_vertical_tabs_;
 
   // The profile's tab restore service. The service is owned by the profile,
   // and we install ourselves as an observer.
   TabRestoreService* tab_restore_service_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_H_