app_list: Show apps grid after installing from cws result.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index c7b4b1f564ca9961ee3ec2028f8f750e7918b184..bbd8a8345c998f3de418e8b88ecdd9d830742308 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -324,7 +324,7 @@ Shell::~Shell() {
   activation_controller_.reset();
 
 #if defined(OS_CHROMEOS) && defined(USE_X11)
-   if (display_change_observer_)
+  if (display_change_observer_)
     output_configurator_->RemoveObserver(display_change_observer_.get());
   if (output_configurator_animation_)
     output_configurator_->RemoveObserver(output_configurator_animation_.get());
@@ -691,6 +691,11 @@ aura::Window* Shell::GetAppListWindow() {
   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 }
 
+void Shell::ShowAppListAppsGrid() {
+  if (app_list_controller_)
+    app_list_controller_->ShowAppsGrid();
+}
+
 bool Shell::IsSystemModalWindowOpen() const {
   if (simulate_modal_window_open_for_testing_)
     return true;