Initial stubs for App Launcher on Linux Aura.

chrome/browser/ui/app_list/app_list_service_linux.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 "chrome/browser/ui/app_list/app_list_service_linux.h"
+
+#include "base/memory/singleton.h"
+
+AppListServiceLinux::~AppListServiceLinux() {}
+
+// static
+AppListServiceLinux* AppListServiceLinux::GetInstance() {
+  return Singleton<AppListServiceLinux,
+                   LeakySingletonTraits<AppListServiceLinux> >::get();

[Matt Giuca, 2013/09/26 04:10:40]

Can anybody explain why LeakySingletonTraits is used here? (It's in
AppListController (win) and AppListServiceMac.)

[tapted, 2013/09/26 04:39:56]

It prevents a call to the AppListServiceLinux destructor being made during the
atexit handlers. Since it's virtual, it "can't" be elided, but it's also really
boring, so would just make Chrome take a few microseconds longer to exit.

+}
+
+void AppListServiceLinux::Init(Profile* initial_profile) {
+  NOTIMPLEMENTED();

[tapted, 2013/09/26 04:39:56]

You can probably just `HandleCommandLineFlags(initial_profile);` here - there
may be nothing else you need.

+}
+
+void AppListServiceLinux::CreateForProfile(Profile* requested_profile) {
+  NOTIMPLEMENTED();
+}
+
+void AppListServiceLinux::ShowForProfile(Profile* requested_profile) {
+  NOTIMPLEMENTED();
+}
+
+void AppListServiceLinux::DismissAppList() {
+  NOTIMPLEMENTED();
+}
+
+bool AppListServiceLinux::IsAppListVisible() const {
+  NOTIMPLEMENTED();
+  return false;
+}
+
+gfx::NativeWindow AppListServiceLinux::GetAppListWindow() {
+  NOTIMPLEMENTED();
+  return gfx::NativeWindow();
+}
+
+AppListControllerDelegate* AppListServiceLinux::CreateControllerDelegate() {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+void AppListServiceLinux::CreateShortcut() {
+  NOTIMPLEMENTED();
+}
+
+AppListServiceLinux::AppListServiceLinux() {}
+
+// static
+AppListService* AppListService::Get() {
+  return AppListServiceLinux::GetInstance();
+}
+
+// static
+void AppListService::InitAll(Profile* initial_profile) {
+  Get()->Init(initial_profile);
+}