Move //mojo/shell to //shell

mojo/shell/data_pipe_peek.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.
-
-#include <string>
-
-#include "mojo/public/cpp/system/core.h"
-
-namespace mojo {
-namespace shell {
-
-// The Peek functions are only intended to be used by the
-// DyanmicApplicationLoader class for discovering the type of a
-// URL response. They are a stopgap to be replaced by real support
-// in the DataPipe classes.
-
-// Return true and the first newline terminated line from source. Return false
-// if more than max_line_length bytes are scanned without seeing a newline, or
-// if the timeout is exceeded.
-bool BlockingPeekLine(
-    DataPipeConsumerHandle source,
-    std::string* line,
-    size_t max_line_length,
-    MojoDeadline timeout);
-
-// Return true and the first bytes_length bytes from source. Return false
-// if the timeout is exceeded.
-bool BlockingPeekNBytes(
-    DataPipeConsumerHandle source,
-    std::string* bytes,
-    size_t bytes_length,
-    MojoDeadline timeout);
-
-} // namespace shell
-} // namespace mojo