Rework security checks to be based on Window rather than Frame.

third_party/WebKit/LayoutTests/fast/dom/Window/resources/window-property-collector.js

Index: third_party/WebKit/LayoutTests/fast/dom/Window/resources/window-property-collector.js
diff --git a/third_party/WebKit/LayoutTests/fast/dom/Window/resources/window-property-collector.js b/third_party/WebKit/LayoutTests/fast/dom/Window/resources/window-property-collector.js
index fd228a0a94ddf534a55eeb54a2f0000a00f6ff36..826e4c7871ece8912aec6fb17241305b983553a8 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/Window/resources/window-property-collector.js
+++ b/third_party/WebKit/LayoutTests/fast/dom/Window/resources/window-property-collector.js
@@ -25,7 +25,10 @@ function emitExpectedResult(path, expected)
 
     // Skip the properties which are hard to expect a stable result.
     if (path[0] == 'accessibilityController' // we can hardly estimate the states of the cached WebAXObjects.
-        || path[0] == 'localStorage') { // local storage is not reliably cleared between tests.
+        // TODO(https://crbug.com/698610): Web storage APIs are not being
+        // cleared between tests.
+        || path[0] == 'localStorage'
+        || path[0] == 'sessionStorage') {

[dcheng, 2017/03/06 06:59:47]

I plan on fixing this separately

         return;
     }