Add unit tests for AppListServiceImpl.

chrome/browser/ui/views/app_list/keep_alive_service_impl.cc

Index: chrome/browser/ui/views/app_list/keep_alive_service_impl.cc
diff --git a/chrome/browser/ui/views/app_list/keep_alive_service_impl.cc b/chrome/browser/ui/views/app_list/keep_alive_service_impl.cc
deleted file mode 100644
index e7597cbb34ef3fe0561d70a2c8288ecb2c7046d9..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/views/app_list/keep_alive_service_impl.cc
+++ /dev/null
@@ -1,44 +0,0 @@
-// 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/views/app_list/keep_alive_service_impl.h"
-
-#include "base/message_loop/message_loop.h"
-#include "chrome/browser/lifetime/application_lifetime.h"
-#include "content/public/browser/browser_thread.h"
-
-ScopedKeepAlive::ScopedKeepAlive() {
-  chrome::StartKeepAlive();
-}
-
-ScopedKeepAlive::~ScopedKeepAlive() {
-  chrome::EndKeepAlive();
-}
-
-KeepAliveServiceImpl::KeepAliveServiceImpl() {
-}
-
-KeepAliveServiceImpl::~KeepAliveServiceImpl() {
-}
-
-void KeepAliveServiceImpl::EnsureKeepAlive() {
-  if (!keep_alive_)
-    keep_alive_.reset(new ScopedKeepAlive());
-}
-
-void KeepAliveServiceImpl::FreeKeepAlive() {
-  if (keep_alive_) {
-    // We may end up here as the result of the OS deleting the AppList's
-    // widget (WidgetObserver::OnWidgetDestroyed). If this happens and there
-    // are no browsers around then deleting the keep alive will result in
-    // deleting the Widget again (by way of CloseAllSecondaryWidgets). When
-    // the stack unravels we end up back in the Widget that was deleted and
-    // crash. By delaying deletion of the keep alive we ensure the Widget has
-    // correctly been destroyed before ending the keep alive so that
-    // CloseAllSecondaryWidgets() won't attempt to delete the AppList's Widget
-    // again.
-    base::MessageLoop::current()->DeleteSoon(FROM_HERE,
-                                             keep_alive_.release());
-  }
-}