Fix some JS style nits.

chrome/test/data/webui/mock_controller.js

Index: chrome/test/data/webui/mock_controller.js
diff --git a/chrome/test/data/webui/mock_controller.js b/chrome/test/data/webui/mock_controller.js
index 62587184f3eb488e94952e9917d8c2b6188c321a..66b0011a64f50b6a85ecdc55a88d184909fe4404 100644
--- a/chrome/test/data/webui/mock_controller.js
+++ b/chrome/test/data/webui/mock_controller.js
@@ -28,14 +28,14 @@ function MockMethod() {
 
   /**
    * List of signatures for fucntion calls.
-   * @type {!Array.<!Array>}
+   * @type {!Array<!Array>}
    * @private
    */
   fn.calls_ = [];
 
   /**
    * List of expected call signatures.
-   * @type {!Array.<!Array>}
+   * @type {!Array<!Array>}
    * @private
    */
   fn.expectations_ = [];
@@ -48,7 +48,7 @@ function MockMethod() {
 
   /**
    * List of arguments for callback function.
-   * @type {!Array.<!Array>}
+   * @type {!Array<!Array>}
    */
   fn.callbackData = [];
 
@@ -122,14 +122,14 @@ function MockController() {
   /**
    * Original functions implementations, which are restored when |reset| is
    * called.
-   * @type {!Array.<!Object>}
+   * @type {!Array<!Object>}
    * @private
    */
   this.overrides_ = [];
 
   /**
    * List of registered mocks.
-   * @type {!Array.<!MockMethod>}
+   * @type {!Array<!MockMethod>}
    * @private
    */
   this.mocks_ = [];