Move PageTransition into content namespace. While I'm touching all these files, I've also updated...

chrome/browser/debugger/devtools_window.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_DEBUGGER_DEVTOOLS_WINDOW_H_
 #define CHROME_BROWSER_DEBUGGER_DEVTOOLS_WINDOW_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 80 matching lines @@
   void AddDevToolsExtensionsToClient();
   void CallClientFunction(const string16& function_name,
                           const base::Value& arg);
   // Overridden from TabContentsDelegate.
   // Deprecated. Use two-arguments variant instead.
   virtual TabContents* OpenURLFromTab(
       TabContents* source,
       const GURL& url,
       const GURL& referrer,
       WindowOpenDisposition disposition,
-      PageTransition::Type transition) OVERRIDE;
+      content::PageTransition transition) OVERRIDE;
   virtual TabContents* OpenURLFromTab(TabContents* source,
                                       const OpenURLParams& params) OVERRIDE;
   virtual void AddNewContents(TabContents* source,
                               TabContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture);
   virtual void CloseContents(TabContents* source) {}
   virtual bool CanReloadContents(TabContents* source) const;
   virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
@@ skipping 25 matching lines @@
   TabContentsWrapper* tab_contents_;
   Browser* browser_;
   bool docked_;
   bool is_loaded_;
   DevToolsToggleAction action_on_load_;
   NotificationRegistrar registrar_;
   DISALLOW_COPY_AND_ASSIGN(DevToolsWindow);
 };
 
 #endif  // CHROME_BROWSER_DEBUGGER_DEVTOOLS_WINDOW_H_