Move //mojo/shell to //shell

mojo/shell/init.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 "mojo/shell/init.h"
-
-#include "base/logging.h"
-
-namespace mojo {
-namespace shell {
-
-void InitializeLogging() {
-  logging::LoggingSettings settings;
-  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
-  logging::InitLogging(settings);
-  // To view log output with IDs and timestamps use "adb logcat -v threadtime".
-  logging::SetLogItems(false,    // Process ID
-                       false,    // Thread ID
-                       false,    // Timestamp
-                       false);   // Tick count
-}
-
-}  // namespace shell
-}  // namespace mojo