[DevTools] Show focus outline for inputs everywhere except dialogs.

Source/devtools/front_end/inspectorStyle.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
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+input[type="search"]:focus,
+input[type="text"]:focus {
+    outline: auto 5px -webkit-focus-ring-color;
+}
+
 input[type="checkbox"] {
     height: 12px;
     width: 12px;
     margin: auto 3px;
     flex-shrink: 0;
 }
 
 label {
     cursor: pointer;
 }
@@ skipping 2734 matching lines @@
 }
 
 body.inactive select.chrome-select,
 .chrome-select:disabled {
     background-image: -webkit-image-set(url(Images/chromeDisabledSelect.png) 1x, url(Images/chromeDisabledSelect_2x.png) 2x), linear-gradient(#f1f1f1, #f1f1f1 38%, #e6e6e6);
     border-color: rgba(80, 80, 80, 0.2);
     box-shadow: 0 1px 0 rgba(80, 80, 80, 0.08),
     inset 0 1px 2px rgba(255, 255, 255, 0.75);
     color: #aaa;
 }