ash: Add launcher overflow bubble.

ash/launcher/launcher.cc

Index: ash/launcher/launcher.cc
diff --git a/ash/launcher/launcher.cc b/ash/launcher/launcher.cc
index bc879e7cb8f01664641280f40ccfecf6145c5fe9..847509714f35f770f93d0d9a2bd5199bbf3cb9df 100644
--- a/ash/launcher/launcher.cc
+++ b/ash/launcher/launcher.cc
@@ -4,6 +4,8 @@
 
 #include "ash/launcher/launcher.h"
 
+#include <algorithm>
+
 #include "ash/focus_cycler.h"
 #include "ash/launcher/launcher_delegate.h"
 #include "ash/launcher/launcher_model.h"
@@ -33,7 +35,7 @@ const int kBackgroundAlpha = 128;
 // The contents view of the Widget. This view contains LauncherView and
 // sizes it to the width of the widget minus the size of the status area.
 class Launcher::DelegateView : public views::WidgetDelegate,
-                               public views::AccessiblePaneView{
+                               public views::AccessiblePaneView {
  public:
   explicit DelegateView(Launcher* launcher);
   virtual ~DelegateView();
@@ -211,6 +213,10 @@ bool Launcher::IsShowingMenu() const {
   return launcher_view_->IsShowingMenu();
 }
 
+bool Launcher::IsShowingOverflowBubble() const {
+  return launcher_view_->IsShowingOverflowBubble();
+}
+
 views::View* Launcher::GetAppListButtonView() const {
   return launcher_view_->GetAppListButtonView();
 }