Fix Ctrl-A then Ctrl-X infinite loop in quick_launch.

mash/quick_launch/quick_launch.cc

Index: mash/quick_launch/quick_launch.cc
diff --git a/mash/quick_launch/quick_launch.cc b/mash/quick_launch/quick_launch.cc
index dd5bc32a621eacf98acb68c9400ff4dd1e65a357..4346b1d9c2849f70936636e964e6bfccf5b3de9b 100644
--- a/mash/quick_launch/quick_launch.cc
+++ b/mash/quick_launch/quick_launch.cc
@@ -96,6 +96,9 @@ class QuickLaunchUI : public views::WidgetDelegateView,
     if (suggestion_rejected_)
       return;
 
+    if (new_contents.length() == 0)

[sadrul, 2016/11/17 20:32:46]

new_contents.empty()

[Hadi, 2016/11/17 20:44:31]

Done.

+      return;
+
     // TODO(beng): it'd be nice if we persisted some history/scoring here.
     for (const auto& name : app_names_) {
       if (base::StartsWith(name, new_contents,