Use mojo app list interfaces for mash and classic ash.

ash/shell/content/client/shell_browser_main_parts.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 "ash/shell/content/client/shell_browser_main_parts.h"
 
 #include "ash/common/login_status.h"
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/wm_shell.h"
 #include "ash/content/shell_content_state.h"
 #include "ash/shell.h"
 #include "ash/shell/content/shell_content_state_impl.h"
+#include "ash/shell/example_app_list_presenter.h"
 #include "ash/shell/shell_delegate_impl.h"
 #include "ash/shell/window_watcher.h"
 #include "ash/shell_init_params.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/i18n/icu_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/context_factory.h"
 #include "content/public/common/content_switches.h"
 #include "content/shell/browser/shell_browser_context.h"
 #include "content/shell/browser/shell_net_log.h"
 #include "net/base/net_module.h"
+#include "ui/app_list/presenter/app_list.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/ui_base_paths.h"
 #include "ui/compositor/compositor.h"
 #include "ui/display/screen.h"
 #include "ui/message_center/message_center.h"
 #include "ui/views/test/test_views_delegate.h"
 #include "ui/wm/core/wm_state.h"
@@ skipping 99 matching lines @@
   init_params.blocking_pool = content::BrowserThread::GetBlockingPool();
   ash::Shell::CreateInstance(init_params);
   ash::WmShell::Get()->CreateShelf();
   ash::WmShell::Get()->UpdateAfterLoginStatusChange(LoginStatus::USER);
 
   window_watcher_.reset(new ash::shell::WindowWatcher);
   display::Screen::GetScreen()->AddObserver(window_watcher_.get());
 
   ash::shell::InitWindowTypeLauncher();
 
+  // Initialize the example app list presenter.
+  example_app_list_presenter_ = base::MakeUnique<ExampleAppListPresenter>();

[mfomitchev, 2016/12/22 03:17:45]

Wait, this is executed in production code. If ExampleAppListPresenter is needed
for production code, it shouldn't be called "ExampleAppListPresenter"...

[msw, 2016/12/22 16:31:52]

This is //ash/shell, which is only used for the ash_shell_with_content
test/example target. Note the use of ash/shell/shell_delegate_impl.h here, etc.
This is *not* production Chrome OS (or desktop Chrome Browser) code.

[mfomitchev, 2016/12/22 18:27:11]

Ah, ok, thanks for the clarification

+  WmShell::Get()->app_list()->SetAppListPresenter(
+      example_app_list_presenter_->CreateInterfacePtrAndBind());
+
   ash::Shell::GetPrimaryRootWindow()->GetHost()->Show();
 }
 
 void ShellBrowserMainParts::PostMainMessageLoopRun() {
   display::Screen::GetScreen()->RemoveObserver(window_watcher_.get());
 
   window_watcher_.reset();
   delegate_ = nullptr;
   ash::Shell::DeleteInstance();
   ShellContentState::DestroyInstance();
@@ skipping 14 matching lines @@
   browser_context_.reset();
 }
 
 bool ShellBrowserMainParts::MainMessageLoopRun(int* result_code) {
   base::RunLoop().Run();
   return true;
 }
 
 }  // namespace shell
 }  // namespace ash