Add explicit base to FilePath.

content/test/test_content_browser_client.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/test/test_content_browser_client.h"
 
 #include <string>
 
 #include "base/file_path.h"
 #include "base/logging.h"
@@ skipping 13 matching lines @@
     RenderViewHostDelegateView** render_view_host_delegate_view) {
 #if defined(OS_IOS)
   return NULL;
 #else
   TestWebContentsView* rv = new TestWebContentsView;
   *render_view_host_delegate_view = rv;
   return rv;
 #endif
 }
 
-FilePath TestContentBrowserClient::GetDefaultDownloadDirectory() {
+base::FilePath TestContentBrowserClient::GetDefaultDownloadDirectory() {
   if (!download_dir_.IsValid()) {
     bool result = download_dir_.CreateUniqueTempDir();
     CHECK(result);
   }
   return download_dir_.path();
 }
 
 }  // namespace content