[Devtools] Fix closure compiler

Fixes closure compiler error caused by the following patches landing at
once:

https://codereview.chromium.org/2058323002
https://codereview.chromium.org/2181123002

BUG=none

Review-Url: https://codereview.chromium.org/2189733002
Cr-Commit-Position: refs/heads/master@{#408256}

third_party/WebKit/Source/devtools/front_end/accessibility/ARIAAttributesView.js

@@ -229,13 +229,11 @@ WebInspector.ARIAAttributesPane.ARIAAttributePrompt = function(treeElement)
 WebInspector.ARIAAttributesPane.ARIAAttributePrompt.prototype = {
     /**
      * @param {!Element} proxyElement
-     * @param {string} text
-     * @param {number} cursorOffset
      * @param {!Range} wordRange
      * @param {boolean} force
      * @param {function(!Array.<string>, number=)} completionsReadyCallback
      */
-    _buildPropertyCompletions: function(proxyElement, text, cursorOffset, wordRange, force, completionsReadyCallback)
+    _buildPropertyCompletions: function(proxyElement, wordRange, force, completionsReadyCallback)
     {
         // TODO(aboxhall): replace placeholder implementation with real implementation
         completionsReadyCallback([], 0);