DevTools: [Console] fix selection of all console messages

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 802 matching lines @@
 #console-messages {
     flex: 1 1;
     padding: 2px 0;
     overflow-y: auto;
     word-wrap: break-word;
     -webkit-user-select: text;
     border-top: 1px solid rgb(230, 230, 230);
     -webkit-transform: translateZ(0);
 }
 
+.console-view-fix-select-all {
+    height: 0px;
+    overflow: hidden;
+}
+
 #console-prompt {
     clear: right;
     position: relative;
     padding: 1px 22px 1px 0;
     margin-left: 24px;
     min-height: 16px;
     white-space: pre-wrap;
     -webkit-user-modify: read-write-plaintext-only;
 }
 
@@ skipping 1946 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;
 }