[ash] Hide tooltip when mouse button is pressed

ash/launcher/launcher_view.cc

Index: ash/launcher/launcher_view.cc
diff --git a/ash/launcher/launcher_view.cc b/ash/launcher/launcher_view.cc
index 893edcc7b0e5f32112244ed3e1860145c20f2709..ce43c6085476789ad69c3e86d7b4756ff046b7b9 100644
--- a/ash/launcher/launcher_view.cc
+++ b/ash/launcher/launcher_view.cc
@@ -1517,7 +1517,6 @@ void LauncherView::PointerPressedOnButton(views::View* view,
   if (drag_view_)
     return;
 
-  tooltip_->Close();
   int index = view_model_->GetIndexOfView(view);
   if (index == -1)
     return;
@@ -1605,8 +1604,6 @@ void LauncherView::ButtonPressed(views::Button* sender,
   if (dragging())
     return;
 
-  tooltip_->Close();
-
   if (sender == overflow_button_) {
     ToggleOverflowBubble();
     return;
@@ -1697,8 +1694,6 @@ void LauncherView::ShowContextMenuForView(views::View* source,
     view_index = -1;
   }
 
-  tooltip_->Close();
-
   if (view_index == -1) {
     Shell::GetInstance()->ShowContextMenu(point, source_type);
     return;