[WebUI] use one-way Polymer binding on dom-if, dom-repeat, and iron-list

chrome/test/data/webui/cr_elements/cr_scrollable_behavior_tests.js

Index: chrome/test/data/webui/cr_elements/cr_scrollable_behavior_tests.js
diff --git a/chrome/test/data/webui/cr_elements/cr_scrollable_behavior_tests.js b/chrome/test/data/webui/cr_elements/cr_scrollable_behavior_tests.js
index 160f5c231f2b45afec7a72a976dedace60879e00..7c0ef062d8e9462f8cb86c118fbcdf346913911f 100644
--- a/chrome/test/data/webui/cr_elements/cr_scrollable_behavior_tests.js
+++ b/chrome/test/data/webui/cr_elements/cr_scrollable_behavior_tests.js
@@ -18,7 +18,7 @@ suite('cr-scrollable-behavior', function() {
             }
           </style>
           <div id="container" scrollable>
-            <iron-list scroll-target="container" items=[[items]]>
+            <iron-list scroll-target="container" items="[[items]]">

[dpapad, 2017/05/19 19:35:19]

Was this caught by a PRESUBMIT? I recall that we added such a check a while ago,
but maybe only recently is being applied to test files?

[dschuyler, 2017/05/19 19:37:10]

It wasn't. I was grepping for issues (just lookin' for trouble) and found it.
The presubmit may need a touch-up or config change(?)

               <template>
                 <div>[[item]]</div>
               </template>