Add explicit base to FilePath.

content/shell/shell_devtools_delegate.cc

 // 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.
 
 #include "content/shell/shell_devtools_delegate.h"
 
 #include "base/bind.h"
 #include "content/public/browser/devtools_http_handler.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
@@ skipping 38 matching lines @@
 
 std::string ShellDevToolsDelegate::GetDiscoveryPageHTML() {
   return ResourceBundle::GetSharedInstance().GetRawDataResource(
       IDR_CONTENT_SHELL_DEVTOOLS_DISCOVERY_PAGE).as_string();
 }
 
 bool ShellDevToolsDelegate::BundlesFrontendResources() {
   return true;
 }
 
-FilePath ShellDevToolsDelegate::GetDebugFrontendDir() {
-  return FilePath();
+base::FilePath ShellDevToolsDelegate::GetDebugFrontendDir() {
+  return base::FilePath();
 }
 
 std::string ShellDevToolsDelegate::GetPageThumbnailData(const GURL& url) {
   return "";
 }
 
 RenderViewHost* ShellDevToolsDelegate::CreateNewTarget() {
   Shell* shell = Shell::CreateNewWindow(browser_context_,
                                         GURL(chrome::kAboutBlankURL),
                                         NULL,
                                         MSG_ROUTING_NONE,
                                         gfx::Size());
   return shell->web_contents()->GetRenderViewHost();
 }
 
 DevToolsHttpHandlerDelegate::TargetType
 ShellDevToolsDelegate::GetTargetType(RenderViewHost*) {
   return kTargetTypeTab;
 }
 
 }  // namespace content