Allow local file to run though content handler.

mojo/common/data_pipe_utils.h

 // Copyright 2014 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 MOJO_SHELL_DATA_PIPE_UTILS_H_
 #define MOJO_SHELL_DATA_PIPE_UTILS_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
@@ skipping 11 matching lines @@
 
 // Asynchronously copies data from source to the destination file. The given
 // |callback| is run upon completion. File writes will be scheduled to the
 // given |task_runner|.
 void MOJO_COMMON_EXPORT CopyToFile(
     ScopedDataPipeConsumerHandle source,
     const base::FilePath& destination,
     base::TaskRunner* task_runner,
     const base::Callback<void(bool /*success*/)>& callback);
 
+void MOJO_COMMON_EXPORT
+CopyFromFile(const base::FilePath& source,
+             ScopedDataPipeProducerHandle destination,
+             uint32_t skip,
+             base::TaskRunner* task_runner,
+             const base::Callback<void(bool /*success*/)>& callback);
+
 // Copies the data from |source| into |contents| and returns true on success and
 // false on error.  In case of I/O error, |contents| holds the data that could
 // be read from source before the error occurred.
 bool MOJO_COMMON_EXPORT BlockingCopyToString(
     ScopedDataPipeConsumerHandle source,
     std::string* contents);
 
 }  // namespace common
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_DATA_PIPE_UTILS_H_