[Chromoting] Use compact notation for javascript @private types

remoting/webapp/crd/js/wcs_sandbox_content.js

Index: remoting/webapp/crd/js/wcs_sandbox_content.js
diff --git a/remoting/webapp/crd/js/wcs_sandbox_content.js b/remoting/webapp/crd/js/wcs_sandbox_content.js
index 95c77000ad521536e1b773bc3e47c0a7eeeb80c8..fb8f4ce04c37fea6590c959c741da1707ea4e2e8 100644
--- a/remoting/webapp/crd/js/wcs_sandbox_content.js
+++ b/remoting/webapp/crd/js/wcs_sandbox_content.js
@@ -16,20 +16,11 @@ var remoting = remoting || {};
 
 /** @constructor */
 remoting.WcsSandboxContent = function() {
-  /**
-   * @type {Window}
-   * @private
-   */
+  /** @private {Window} */
   this.parentWindow_ = null;
-  /**
-   * @type {number}
-   * @private
-   */
+  /** @private {number} */
   this.nextXhrId_ = 0;
-  /**
-   * @type {Object<number, XMLHttpRequest>}
-   * @private
-   */
+  /** @private {Object<number, XMLHttpRequest>} */
   this.pendingXhrs_ = {};
 
   window.addEventListener('message', this.onMessage_.bind(this), false);