Revert "Revert "Support multiple DOM isolates and tweak devtools frontend to better handle large #s…

Source/devtools/front_end/inspectorStyle.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 2610 matching lines @@
 .custom-popup-vertical-scroll ::-webkit-scrollbar-track-piece:vertical:decrement {
 }
 
 .custom-popup-vertical-scroll ::-webkit-scrollbar-track:vertical {
     background: linear-gradient(to right, rgb(80, 80, 80), rgb(192, 192, 192) 25%, rgb(192, 192, 192));
     border-radius: 5px;
     margin: 5px;
 }
 
 .console-context {
-    max-width: 200px;
+    max-width: 1200px;
 }
 
 .root-view {
     overflow: hidden;
     position: absolute !important;
     left: 0;
     top: 0;
     right: 0;
     bottom: 0;
 }
@@ skipping 211 matching lines @@
 }
 
 .resources-divider-label {
     position: absolute;
     top: 4px;
     right: 3px;
     font-size: 80%;
     white-space: nowrap;
     pointer-events: none;
 }