Skeleton for app_list on OSX, and refactoring for enable_app_list=1 on OS=="mac".

ui/app_list/test/apps_grid_view_test_api.cc

-// Copyright (c) 2012 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 "ui/app_list/test/apps_grid_view_test_api.h"
-
-#include "ui/app_list/apps_grid_view.h"
-
-namespace app_list {
-namespace test {
-
-AppsGridViewTestApi::AppsGridViewTestApi(AppsGridView* view)
-    : view_(view) {
-}
-
-AppsGridViewTestApi::~AppsGridViewTestApi() {
-}
-
-views::View* AppsGridViewTestApi::GetViewAtModelIndex(int index) const {
-  return view_->view_model_.view_at(index);
-}
-
-void AppsGridViewTestApi::LayoutToIdealBounds() {
-  view_->bounds_animator_.Cancel();
-  view_->Layout();
-}
-
-void AppsGridViewTestApi::SetPageFlipDelay(int page_flip_delay_in_ms) {
-  view_->page_flip_delay_in_ms_ = page_flip_delay_in_ms;
-}
-
-}  // namespace test;
-}  // namespace app_list