Convert file url to lowercase to make it match a file handler pattern.

chrome/browser/chromeos/extensions/file_browser_private_api.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 "chrome/browser/chromeos/extensions/file_browser_private_api.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 530 matching lines @@
 bool GetFileTasksFileBrowserFunction::RunImpl() {
   ListValue* files_list = NULL;
   if (!args_->GetList(0, &files_list))
     return false;
 
   std::vector<GURL> file_urls;
   for (size_t i = 0; i < files_list->GetSize(); ++i) {
     std::string file_url;
     if (!files_list->GetString(i, &file_url))
       return false;
-
-    // We need case-insensitive matching, and pattern in handler is already
-    // in lower case.
-    StringToLowerASCII(&file_url);
     file_urls.push_back(GURL(file_url));
   }
 
   ListValue* result_list = new ListValue();
   result_.reset(result_list);
 
   file_handler_util::LastUsedHandlerList common_tasks;
   if (!file_handler_util::FindCommonTasks(profile_, file_urls, &common_tasks))
     return false;
 
@@ skipping 1145 matching lines @@
     local_paths_->Append(Value::CreateStringValue(""));
     DVLOG(1) << "Failed to get " << gdata_path.value()
              << " with error code: " << error;
   }
 
   remaining_gdata_paths_.pop();
 
   // Start getting the next file.
   GetFileOrSendResponse();
 }