DevTools: refactoring connection creation, removing a couple of dead code branches.

Source/devtools/front_end/inspector.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 409 matching lines @@
 }
 
 .close-button-gray:active {
     background-position: -160px -96px;
 }
 
 body.undocked .toolbar-item .close-button {
     display: none;
 }
 
-body.remote .toolbar-item .close-button {
-    display: none;
-}
-
 .panel-status-bar {
     border-top: none;
     display: flex;
     background-color: white;
     flex: 0 0 23px;
     position: relative;
 }
 
 .panel-status-bar > div {
     margin: auto 0;
@@ skipping 260 matching lines @@
 }
 
 .ew-resizer-widget {
     cursor: ew-resize;
 }
 
 .settings-status-bar-item .glyph {
     -webkit-mask-position: -160px -24px;
 }
 
-body.remote .dock-status-bar-item {
-    display: none;
-}
-
 .console-status-bar-item .glyph {
     -webkit-mask-position: -64px -24px;
 }
 
 .screencast-status-bar-item.toggled-left .glyph {
     -webkit-mask-position: -256px -96px;
 }
 
 .screencast-status-bar-item.toggled-top .glyph {
     -webkit-mask-position: -288px -96px;
@@ skipping 2217 matching lines @@
 }
 
 .viewport-control-gap-element {
     color: transparent;
 }
 
 label.checkbox-with-label {
     display: flex;
     -webkit-user-select: none;
 }