Add explicit base to FilePath.

content/shell/shell_message_filter.cc

 // Copyright (c) 2013 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_message_filter.h"
 
 #include "base/file_util.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/shell/shell_messages.h"
 #include "webkit/fileapi/isolated_context.h"
@@ skipping 13 matching lines @@
   IPC_BEGIN_MESSAGE_MAP_EX(ShellMessageFilter, message, *message_was_ok)
     IPC_MESSAGE_HANDLER(ShellViewHostMsg_ReadFileToString, OnReadFileToString)
     IPC_MESSAGE_HANDLER(ShellViewHostMsg_RegisterIsolatedFileSystem,
                         OnRegisterIsolatedFileSystem)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
-void ShellMessageFilter::OnReadFileToString(const FilePath& local_file,
+void ShellMessageFilter::OnReadFileToString(const base::FilePath& local_file,
                                             std::string* contents) {
   file_util::ReadFileToString(local_file, contents);
 }
 
 void ShellMessageFilter::OnRegisterIsolatedFileSystem(
-    const std::vector<FilePath>& absolute_filenames,
+    const std::vector<base::FilePath>& absolute_filenames,
     std::string* filesystem_id) {
   fileapi::IsolatedContext::FileInfoSet files;
   ChildProcessSecurityPolicy* policy =
       ChildProcessSecurityPolicy::GetInstance();
   for (size_t i = 0; i < absolute_filenames.size(); ++i) {
     files.AddPath(absolute_filenames[i], NULL);
     if (!policy->CanReadFile(render_process_id_, absolute_filenames[i]))
       policy->GrantReadFile(render_process_id_, absolute_filenames[i]);
   }
   *filesystem_id =
       fileapi::IsolatedContext::GetInstance()->RegisterDraggedFileSystem(files);
   policy->GrantReadFileSystem(render_process_id_, *filesystem_id);
 }
 
 }  // namespace content