DevTools: extract modules (with extensions)

third_party/WebKit/Source/devtools/front_end/sources/WatchExpressionsSidebarPane.js

 /*
  * Copyright (C) IBM Corp. 2009  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 166 matching lines @@
     this.update();
   }
 
   /**
    * @override
    * @param {!UI.Context} context
    * @param {string} actionId
    * @return {boolean}
    */
   handleAction(context, actionId) {
-    var frame = UI.context.flavor(Sources.UISourceCodeFrame);
+    var frame = UI.context.flavor(SourceFrame.UISourceCodeFrame);
     if (!frame)
       return false;
     var text = frame.textEditor.text(frame.textEditor.selection());
     UI.viewManager.showView('sources.watch');
     this.doUpdate();
     this._createWatchExpression(text);
     this._saveExpressions();
     return true;
   }
 
@@ skipping 219 matching lines @@
     InspectorFrontendHost.copyText(this._valueElement.textContent);
   }
 };
 
 Sources.WatchExpression._watchObjectGroupId = 'watch-group';
 
 /** @enum {symbol} */
 Sources.WatchExpression.Events = {
   ExpressionUpdated: Symbol('ExpressionUpdated')
 };