Introduce App Launcher for Windows.

chrome/browser/ui/app_list/app_list_view_delegate.cc

Index: chrome/browser/ui/app_list/app_list_view_delegate.cc
diff --git a/chrome/browser/ui/app_list/app_list_view_delegate.cc b/chrome/browser/ui/app_list/app_list_view_delegate.cc
index 67bc837695fbc6195487fd982f2d30b56d35c70c..ca223e9a6f08220b4cc1a7ad5c0d2365f7a9f290 100644
--- a/chrome/browser/ui/app_list/app_list_view_delegate.cc
+++ b/chrome/browser/ui/app_list/app_list_view_delegate.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/ui/app_list/app_list_view_delegate.h"
 
+#include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/app_list/apps_model_builder.h"
 #include "chrome/browser/ui/app_list/chrome_app_list_item.h"
@@ -11,9 +12,13 @@
 #include "content/public/browser/user_metrics.h"
 
 AppListViewDelegate::AppListViewDelegate(AppListController* controller)
-    : controller_(controller) {}
+    : controller_(controller) {
+  browser::StartKeepAlive();
+}
 
-AppListViewDelegate::~AppListViewDelegate() {}
+AppListViewDelegate::~AppListViewDelegate() {
+  browser::EndKeepAlive();
+}
 
 void AppListViewDelegate::SetModel(app_list::AppListModel* model) {
   if (model) {
@@ -68,3 +73,7 @@ void AppListViewDelegate::InvokeSearchResultAction(
 void AppListViewDelegate::Close()  {
   controller_->CloseView();
 }
+
+gfx::ImageSkia AppListViewDelegate::GetWindowAppIcon() {
+  return controller_->GetWindowAppIcon();
+}