[DevTools] Show scrollbars on chrome://inspect

chrome/browser/resources/inspect/inspect.css

 /* Copyright (c) 2012 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. */
 
 * {
   box-sizing: border-box;
 }
 
+html {
+  height: 100%;
+}
+
 body {
   color: rgb(48, 57, 66);
   font-size: 13px;
+  height: 100%;
   margin: 0;
-  min-width: 47em;
-  overflow: hidden;
+  overflow: auto;
 }
 
 .hidden {
-    display: none !important;
+  display: none !important;
 }
 
 img {
   flex-shrink: 0;
   height: 16px;
   padding-left: 2px;
   padding-right: 5px;
   vertical-align: top;
   width: 23px;
 }
 
 #container {
-  -webkit-flex-direction: row;
-  display: -webkit-flex;
+  display: flex;
+  height: 100%
 }
 
 #infobar {
   background: rgb(255, 212, 0);
   height: 20px;
   left: 0;
   line-height: 20px;
   position: fixed;
   right: 0;
   text-align: center;
   visibility: hidden;
   z-index: 1;
 }
 
 #infobar.show {
   visibility: visible;
 }
 
 #navigation {
+  flex-shrink: 0;
   padding-top: 20px;
   width: 150px;
 }
 
 #content {
-  -webkit-flex: 1;
+  flex-grow: 1;
 }
 
 #caption {
   color: rgb(92, 97, 102);
   font-size: 150%;
   padding-bottom: 10px;
   padding-left: 20px;
 }
 
 #serviceworker-internals {
@@ skipping 17 matching lines @@
   line-height: 17px;
   margin: 6px 0;
   padding: 0 2px;
 }
 
 .tab-header:not(.selected) > button {
   color: #999;
 }
 
 #content > div {
+  min-width: 32em;
   padding: 0 20px 65px 0;
 }
 #content > div:not(.selected) {
   display: none;
 }
 
 .content-header {
   background: linear-gradient(white, white 40%, rgba(255, 255, 255, 0.92));
   border-bottom: 1px solid #eee;
   font-size: 150%;
@@ skipping 318 matching lines @@
   display: none;
 }
 
 dialog.target-discovery .port-forwarding {
   display: none;
 }
 
 .config-buttons > label {
   flex-grow: 1
 }
-
-@media (max-width: 47em) {
-  #navigation,
-  #content {
-    overflow: visible;
-  }
-}
-@media (min-width: 47em) {
-  #container {
-    max-height: 100vh;
-  }
-  #navigation,
-  #content {
-    max-height: 100vh;
-    overflow: auto;
-  }
-}