Add profile selector menu to app list.

ui/app_list/views/app_list_view.cc

Index: ui/app_list/views/app_list_view.cc
diff --git a/ui/app_list/views/app_list_view.cc b/ui/app_list/views/app_list_view.cc
index 863e25e55df8ed22c06c2754746e4cb85b65f187..6735f049b867535b74f38cba5c457a04e93258ff 100644
--- a/ui/app_list/views/app_list_view.cc
+++ b/ui/app_list/views/app_list_view.cc
@@ -50,15 +50,12 @@ AppListView::AppListView(AppListViewDelegate* delegate)
       app_list_main_view_(NULL),
       signin_view_(NULL) {
   if (delegate_)
-    delegate_->SetModel(model_.get());
-  if (GetSigninDelegate())
-    GetSigninDelegate()->AddObserver(this);
+    delegate_->InitModel(model_.get());
+  model_->AddObserver(this);
 }
 
 AppListView::~AppListView() {
-  if (GetSigninDelegate())
-    GetSigninDelegate()->RemoveObserver(this);
-
+  model_->RemoveObserver(this);
   // Models are going away, ensure their references are cleared.
   RemoveAllChildViews(true);
 }
@@ -81,7 +78,8 @@ void AppListView::InitAsBubble(gfx::NativeView parent,
 #endif
 
   signin_view_ = new SigninView(
-      GetSigninDelegate(),
+      delegate_ ? delegate_->GetSigninDelegate()
+                : NULL,
       app_list_main_view_->GetPreferredSize().width());
   AddChildView(signin_view_);
 
@@ -174,11 +172,8 @@ void AppListView::Prerender() {
 }
 
 void AppListView::OnSigninStatusChanged() {
-  const bool needs_signin =
-      GetSigninDelegate() && GetSigninDelegate()->NeedSignin();
-
-  signin_view_->SetVisible(needs_signin);
-  app_list_main_view_->SetVisible(!needs_signin);
+  signin_view_->SetVisible(!model_->signed_in());
+  app_list_main_view_->SetVisible(model_->signed_in());
   app_list_main_view_->search_box_view()->InvalidateMenu();
 }
 
@@ -255,12 +250,12 @@ void AppListView::OnWidgetVisibilityChanged(views::Widget* widget,
   Layout();
 }
 
-void AppListView::OnSigninSuccess() {
+void AppListView::OnAppListModelSigninStatusChanged() {
   OnSigninStatusChanged();
 }
 
-SigninDelegate* AppListView::GetSigninDelegate() {
-  return delegate_ ? delegate_->GetSigninDelegate() : NULL;
+void AppListView::OnAppListModelProfilesChanged() {
+  OnSigninStatusChanged();
 }
 
 }  // namespace app_list