DevTools: Make sure a horizontal scrollbar doesn't appear in SuggestBox

third_party/WebKit/Source/devtools/front_end/ui/ListControl.js

Index: third_party/WebKit/Source/devtools/front_end/ui/ListControl.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/ListControl.js b/third_party/WebKit/Source/devtools/front_end/ui/ListControl.js
index a76022f03598a1dae20f6b5baac5182dd216d20a..7c71b89c4e8b83e511491061ef6f72bb50d99a42 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/ListControl.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/ListControl.js
@@ -52,7 +52,8 @@ UI.ListControl = class {
    */
   constructor(delegate) {
     this.element = createElement('div');
-    this.element.style.overflow = 'auto';
+    this.element.style.overflowY = 'auto';
+    this.element.style.overflowX = 'hidden';

[dgozman, 2016/12/30 02:30:40]

I think this line belongs to clients. I can easily imagine viewport with a
horizontal scrollbar, e.g. navigator view.

[einbinder, 2017/01/03 20:06:53]

The ListControl doesn't viewport horizontally, so it shouldn't scroll
horizontally. It can easily be wrapped in a div that scrolls horizontally.

[einbinder, 2017/01/05 18:45:32]

That makes sense. Done.

     this._topElement = this.element.createChild('div');
     this._bottomElement = this.element.createChild('div');
     this._firstIndex = 0;