DevTools: remove UISourceCodeFrame from context when switching panels.

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

Index: third_party/WebKit/Source/devtools/front_end/Runtime.js
diff --git a/third_party/WebKit/Source/devtools/front_end/Runtime.js b/third_party/WebKit/Source/devtools/front_end/Runtime.js
index 9c96dfd843900188328837e9f35274e7c49014a4..c0ff0305bd74e470e0315963458d0ac1d22b4bf6 100644
--- a/third_party/WebKit/Source/devtools/front_end/Runtime.js
+++ b/third_party/WebKit/Source/devtools/front_end/Runtime.js
@@ -451,7 +451,7 @@ Runtime.prototype = {
     {
         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) {
@@ -919,6 +919,22 @@ Runtime.Extension.prototype = {
     {
         // 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;
     }
 }