DevTools: remove UISourceCodeFrame from context when switching panels.

third_party/WebKit/Source/devtools/front_end/Runtime.js

 /*
  * Copyright (C) 2014 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:
  *
  *     * 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 433 matching lines @@
 
     /**
      * @param {!Runtime.Extension} extension
      * @param {?function(function(new:Object)):boolean} predicate
      * @return {boolean}
      */
     _checkExtensionApplicability: function(extension, predicate)
     {
         if (!predicate)
             return false;
-        var contextTypes = /** @type {!Array.<string>|undefined} */ (extension.descriptor().contextTypes);
+        var contextTypes = extension.descriptor().contextTypes;
         if (!contextTypes)
             return true;
         for (var i = 0; i < contextTypes.length; ++i) {
             var contextType = this._resolve(contextTypes[i]);
             var isMatching = !!contextType && predicate(contextType);
             if (isMatching)
                 return true;
         }
         return false;
     },
@@ skipping 447 matching lines @@
         return new constructorFunction(this);
     },
 
     /**
      * @return {string}
      */
     title: function()
     {
         // FIXME: should be WebInspector.UIString() but runtime is not l10n aware yet.
         return this._descriptor["title-" + Runtime._platform] || this._descriptor["title"];
+    },
+
+    /**
+     * @param {function(new:Object)} contextType
+     * @return {boolean}
+     */
+    hasContextType: function(contextType)
+    {
+        var contextTypes = this.descriptor().contextTypes;
+        if (!contextTypes)
+            return false;
+        for (var i = 0; i < contextTypes.length; ++i) {
+            if (contextType === this._module._manager._resolve(contextTypes[i]))
+                return true;
+        }
+        return false;
     }
 }
 
 /**
  * @constructor
  */
 Runtime.ExperimentsSupport = function()
 {
     this._supportEnabled = Runtime.queryParam("experiments") !== null;
     this._experiments = [];
@@ skipping 191 matching lines @@
 {
     var sourceURL = self.location.href;
     if (self.location.search)
         sourceURL = sourceURL.replace(self.location.search, "");
     sourceURL = sourceURL.substring(0, sourceURL.lastIndexOf("/") + 1) + path;
     return "\n/*# sourceURL=" + sourceURL + " */";
 }
 
 /** @type {!Runtime} */
 var runtime;