DevTools: bake generic css files into the concatenated one.

Source/devtools/front_end/sources/SourcesPanel.js

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 42 matching lines @@
  * @constructor
  * @implements {WebInspector.ContextMenu.Provider}
  * @implements {WebInspector.TargetManager.Observer}
  * @extends {WebInspector.Panel}
  * @param {!WebInspector.Workspace=} workspaceForTest
  */
 WebInspector.SourcesPanel = function(workspaceForTest)
 {
     WebInspector.Panel.call(this, "sources");
     this.registerRequiredCSS("sourcesPanel.css");
-    this.registerRequiredCSS("suggestBox.css");
     new WebInspector.UpgradeFileSystemDropTarget(this.element);
 
     WebInspector.settings.showEditorInDrawer = WebInspector.settings.createSetting("showEditorInDrawer", true);
 
     this._workspace = workspaceForTest || WebInspector.workspace;
 
     var helpSection = WebInspector.shortcutsScreen.section(WebInspector.UIString("Sources Panel"));
     this.debugToolbar = this._createDebugToolbar();
     this._debugToolbarDrawer = this._createDebugToolbarDrawer();
     this._targetsToolbar = new WebInspector.TargetsToolbar();
@@ skipping 1400 matching lines @@
      */
     handleAction: function()
     {
         var panel = /** @type {?WebInspector.SourcesPanel} */ (WebInspector.inspectorView.showPanel("sources"));
         if (!panel)
             return false;
         panel.togglePause();
         return true;
     }
 }