Add explicit base to FilePath.

content/shell/shell_devtools_delegate.h

 // Copyright (c) 2012 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 CONTENT_SHELL_SHELL_DEVTOOLS_DELEGATE_H_
 #define CONTENT_SHELL_SHELL_DEVTOOLS_DELEGATE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "content/public/browser/devtools_http_handler_delegate.h"
 
 namespace content {
 
 class BrowserContext;
 class DevToolsHttpHandler;
 
 class ShellDevToolsDelegate : public DevToolsHttpHandlerDelegate {
  public:
   ShellDevToolsDelegate(BrowserContext* browser_context, int port);
   virtual ~ShellDevToolsDelegate();
 
   // Stops http server.
   void Stop();
 
   // DevToolsHttpProtocolHandler::Delegate overrides.
   virtual std::string GetDiscoveryPageHTML() OVERRIDE;
   virtual bool BundlesFrontendResources() OVERRIDE;
-  virtual FilePath GetDebugFrontendDir() OVERRIDE;
+  virtual base::FilePath GetDebugFrontendDir() OVERRIDE;
   virtual std::string GetPageThumbnailData(const GURL& url) OVERRIDE;
   virtual RenderViewHost* CreateNewTarget() OVERRIDE;
   virtual TargetType GetTargetType(RenderViewHost*) OVERRIDE;
 
   DevToolsHttpHandler* devtools_http_handler() {
     return devtools_http_handler_;
   }
 
  private:
   BrowserContext* browser_context_;
   DevToolsHttpHandler* devtools_http_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellDevToolsDelegate);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_DEVTOOLS_DELEGATE_H_