Devtools: [WIP] Implement enhanced devtools extension language APIs

Source/devtools/front_end/sdk/RuntimeModel.js

Index: Source/devtools/front_end/sdk/RuntimeModel.js
diff --git a/Source/devtools/front_end/sdk/RuntimeModel.js b/Source/devtools/front_end/sdk/RuntimeModel.js
index 44f8c32c01b7ee86eb0fe3153e64c7d3c95c310e..2bc569de586b432c4561ae4e5787ff84558d1fac 100644
--- a/Source/devtools/front_end/sdk/RuntimeModel.js
+++ b/Source/devtools/front_end/sdk/RuntimeModel.js
@@ -322,14 +322,27 @@ WebInspector.ExecutionContext.prototype = {
         }
         this.target().runtimeAgent().evaluate(expression, objectGroup, includeCommandLineAPI, doNotPauseOnExceptionsAndMuteConsole, this.id, returnByValue, generatePreview, evalCallback.bind(this));
     },
+    
+    /**
+     * @return {(!WebInspector.DebuggerModel.Location|undefined)}
+     */
+    pauseLocation: function() {
+        var frame = this.debuggerModel.selectedCallFrame();
+        if (frame) {
+            return frame.location();
+        }
+        return;
+    },
 
     /**
      * @param {string} expressionString
+     * @param {string} text
+     * @param {number} cursorOffset
      * @param {string} prefix
      * @param {boolean} force
      * @param {function(!Array.<string>, number=)} completionsReadyCallback
      */
-    completionsForExpression: function(expressionString, prefix, force, completionsReadyCallback)
+    completionsForExpression: function(expressionString, text, cursorOffset, prefix, force, completionsReadyCallback)
     {
         var lastIndex = expressionString.length - 1;