Use the mojo::shell namespace consistently underly shell/.

shell/application_manager/local_fetcher.cc

 // Copyright 2015 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 "shell/application_manager/local_fetcher.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/format_macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "mojo/common/common_type_converters.h"
 #include "mojo/common/data_pipe_utils.h"
 #include "url/url_util.h"
 
 namespace mojo {
+namespace shell {
 
 namespace {
 
 void IgnoreResult(bool result) {
 }
 
 }  // namespace
 
 // A loader for local files.
 LocalFetcher::LocalFetcher(const GURL& url,
@@ skipping 64 matching lines @@
 bool LocalFetcher::PeekFirstLine(std::string* line) {
   std::string start_of_file;
   ReadFileToString(path_, &start_of_file, kMaxShebangLength);
   size_t return_position = start_of_file.find('\n');
   if (return_position == std::string::npos)
     return false;
   *line = start_of_file.substr(0, return_position + 1);
   return true;
 }
 
+}  // namespace shell
 }  // namespace mojo