Unify HasGDocFileExtension and IsHostedDocumentByExtentoin.

chrome/browser/drive/drive_api_util.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_DRIVE_DRIVE_API_UTIL_H_
 #define CHROME_BROWSER_DRIVE_DRIVE_API_UTIL_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 109 matching lines @@
 
 // Returns mime type for hosted documents which have given extension in form
 // ".xxx". If the given extension is not known as one for hosted documents,
 // returns empty string.
 std::string GetHostedDocumentMimeType(const std::string& extension);
 
 // Returns true if the given mime type is corresponding to one of hosted
 // documents.
 bool IsHostedDocument(const std::string& mime_type);
 
-// Returns true if the given extension is corresponding to one of hosted
-// documents.
-bool IsHostedDocumentByExtension(const std::string& extension);
+// Returns true if the given file path has an extension corresponding to one of
+// hosted document types.
+bool HasHostedDocumentExtension(const base::FilePath& path);
 
 }  // namespace util
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_DRIVE_DRIVE_API_UTIL_H_