DevTools: reformat front-end code to match chromium style.

third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js

Index: third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js b/third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js
index fbfb9d23d7b0dab1751bd8c0bf949f6746f1ac01..e5cd84e45d0aa6a5444b20de74ed7211486c7dc4 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/treeoutline.js
@@ -627,6 +627,9 @@ TreeElement.prototype = {
         return this._childrenListNode;
     },
 
+    /**
+     * @return {string|!Node}
+     */
     get title()
     {
         return this._title;
@@ -688,6 +691,9 @@ TreeElement.prototype = {
         }
     },
 
+    /**
+     * @return {string}
+     */
     get tooltip()
     {
         return this._tooltip || "";