Rename Launcher to Shelf.

ash/test/launcher_test_api.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 "ash/test/launcher_test_api.h"
-
-#include "ash/launcher/launcher.h"
-
-namespace ash {
-namespace test {
-
-LauncherTestAPI::LauncherTestAPI(Launcher* launcher)
-    : launcher_(launcher) {
-}
-
-LauncherTestAPI::~LauncherTestAPI() {
-}
-
-internal::ShelfView* LauncherTestAPI::shelf_view() {
-  return launcher_->shelf_view_;
-}
-
-void LauncherTestAPI::SetShelfDelegate(ShelfDelegate* delegate) {
-  launcher_->delegate_ = delegate;
-}
-
-}  // namespace test
-}  // namespace ash