Revert of DevTools: remove UISourceCodeFrame from context when switching panels.

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

 /*
  * Copyright (C) 2012 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.
  *
@@ skipping 63 matching lines @@
      * @return {!WebInspector.UISourceCode}
      */
     uiSourceCode: function()
     {
         return this._uiSourceCode;
     },
 
     wasShown: function()
     {
         WebInspector.SourceFrame.prototype.wasShown.call(this);
-        WebInspector.context.setFlavor(WebInspector.UISourceCodeFrame, this);
         this._boundWindowFocused = this._windowFocused.bind(this);
         this.element.ownerDocument.defaultView.addEventListener("focus", this._boundWindowFocused, false);
         this._checkContentUpdated();
         // We need CodeMirrorTextEditor to be initialized prior to this call as it calls |cursorPositionToCoordinates| internally. @see crbug.com/506566
         setImmediate(this._updateBucketDecorations.bind(this));
     },
 
     willHide: function()
     {
         WebInspector.SourceFrame.prototype.willHide.call(this);
-        WebInspector.context.setFlavor(WebInspector.UISourceCodeFrame, null);
         this.element.ownerDocument.defaultView.removeEventListener("focus", this._boundWindowFocused, false);
         delete this._boundWindowFocused;
         this._uiSourceCode.removeWorkingCopyGetter();
     },
 
     /**
      * @override
      * @return {boolean}
      */
     canEditSource: function()
@@ skipping 543 matching lines @@
 
 /**
  * @param {!WebInspector.UISourceCode.Message} a
  * @param {!WebInspector.UISourceCode.Message} b
  * @return {number}
  */
 WebInspector.UISourceCode.Message.messageLevelComparator = function(a, b)
 {
     return WebInspector.UISourceCode.Message._messageLevelPriority[a.level()] - WebInspector.UISourceCode.Message._messageLevelPriority[b.level()];
 }