Issue 3208 - Separate contentPolicy module into a parent and child part

lib/elemHide.js

Index: lib/elemHide.js
===================================================================
--- a/lib/elemHide.js
+++ b/lib/elemHide.js
@@ -204,47 +204,23 @@ let ElemHide = exports.ElemHide =
    * @return {Boolean}
    */
   shouldHide: function(message)
   {
     let filter = ElemHide.getFilterByKey(message.key);
     if (!filter || !message.frames.length)
       return false;
 
-    let fakeFrame = null;
-    for (let i = message.frames.length - 1; i >= 0; i--)
-    {
-      fakeFrame = {
-        parent: fakeFrame,
-        location: {
-          href: message.frames[i].location
-        },
-        document: {
-          documentElement: {}
-        },
-        QueryInterface: function() {return this;},
-        getInterface: function() {return this;},
-        usePrivateBrowsing: message.isPrivate
-      };
-      fakeFrame.top = fakeFrame.parent || fakeFrame;
-      if (!fakeFrame.parent)
-        fakeFrame.parent = fakeFrame;
-
-      let sitekey = message.frames[i].sitekey || null;
-      fakeFrame.document.documentElement.getAttribute = function(attr)
-      {
-        if (attr == "data-adblockkey")
-          return sitekey;
-        else
-          return null;
-      };
-    }
-
     let {Policy} = require("contentPolicy");
-    return !Policy.processNode(fakeFrame, fakeFrame.document, "ELEMHIDE", filter);
+    return !Policy.shouldAllow({
+      contentType: "ELEMHIDE",
+      location: filter,
+      frames: message.frames,
+      isPrivate: message.isPrivate
+    }).allow;
   },
 
   /**
    * Will be set to true if apply() is running (reentrance protection).
    * @type Boolean
    */
   _applying: false,