storage: Use stl utilities from the base namespace

storage/browser/fileapi/file_system_operation_runner.cc

 // Copyright 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 "storage/browser/fileapi/file_system_operation_runner.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <tuple>
@@ skipping 288 matching lines @@
   operation->Truncate(
       url, length,
       base::Bind(&FileSystemOperationRunner::DidFinish, AsWeakPtr(),
                  handle, callback));
   return handle.id;
 }
 
 void FileSystemOperationRunner::Cancel(
     OperationID id,
     const StatusCallback& callback) {
-  if (ContainsKey(finished_operations_, id)) {
-    DCHECK(!ContainsKey(stray_cancel_callbacks_, id));
+  if (base::ContainsKey(finished_operations_, id)) {
+    DCHECK(!base::ContainsKey(stray_cancel_callbacks_, id));
     stray_cancel_callbacks_[id] = callback;
     return;
   }
   FileSystemOperation* operation = operations_.Lookup(id);
   if (!operation) {
     // There is no operation with |id|.
     callback.Run(base::File::FILE_ERROR_INVALID_OPERATION);
     return;
   }
   operation->Cancel(callback);
@@ skipping 367 matching lines @@
       stray_cancel_callbacks_.find(id);
   if (found_cancel != stray_cancel_callbacks_.end()) {
     // This cancel has been requested after the operation has finished,
     // so report that we failed to stop it.
     found_cancel->second.Run(base::File::FILE_ERROR_INVALID_OPERATION);
     stray_cancel_callbacks_.erase(found_cancel);
   }
 }
 
 }  // namespace storage