Add FilePath to base namespace.

chrome/browser/extensions/updater/extension_downloader_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 CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_DOWNLOADER_DELEGATE_H_
 #define CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_DOWNLOADER_DELEGATE_H_
 
 #include <set>
 #include <string>
 
 #include "base/time.h"
 #include "chrome/browser/extensions/updater/manifest_fetch_data.h"
 
+class GURL;
+
+namespace base {
 class FilePath;
-class GURL;
+}
 
 namespace extensions {
 
 class ExtensionDownloaderDelegate {
  public:
   virtual ~ExtensionDownloaderDelegate();
 
   // Passed as an argument to ExtensionDownloader::OnExtensionDownloadFailed()
   // to detail the reason for the failure.
   enum Error {
@@ skipping 47 matching lines @@
   virtual void OnExtensionDownloadFailed(const std::string& id,
                                          Error error,
                                          const PingResult& ping_result,
                                          const std::set<int>& request_ids);
 
   // Invoked if the extension had an update available and its crx was
   // successfully downloaded to |path|. Ownership of that file is transferred
   // to the delegate.
   virtual void OnExtensionDownloadFinished(
       const std::string& id,
-      const FilePath& path,
+      const base::FilePath& path,
       const GURL& download_url,
       const std::string& version,
       const PingResult& ping_result,
       const std::set<int>& request_ids) = 0;
 
   // Same as OnExtensionDownloadFinished() but only for the kBlacklistAppID
   // extension, which passes different data to the delegate.
   virtual void OnBlacklistDownloadFinished(
       const std::string& data,
       const std::string& package_hash,
@@ skipping 20 matching lines @@
 
   // Invoked to get the current version of extension |id|. Returns false if
   // that extension is not installed.
   virtual bool GetExtensionExistingVersion(const std::string& id,
                                            std::string* version) = 0;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_DOWNLOADER_DELEGATE_H_