[DevTools] Do not collapse toolbars

third_party/WebKit/Source/devtools/front_end/ui/toolbar.css

 /*
  * Copyright (c) 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 :host {
     flex: none;
     padding: 0 2px;
 }
 
 .toolbar-shadow {
     position: relative;
     white-space: nowrap;
     height: 26px;
-    overflow: hidden;

[dgozman, 2016/11/23 02:00:05]

We actually need this to be truncated in other places.
I believe you can use makeWrappable() instead.

     z-index: 12;
     display: flex;
     flex: none;
     align-items: center;
 }
 
 .toolbar-shadow.wrappable {
     flex-wrap: wrap;
 }
 
@@ skipping 219 matching lines @@
     margin-top: -1px;
     width: 28px;
     left: -2px;
 }
 
 span.toolbar-select-container.toolbar-item.warning {
     background: #ffd7d7;
     padding: 0 5px 0 0;
     margin-right: 1px;
 }