Seperate DOMVisualViewport from Blink's VisualViewport class

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

 function collectProperties(windowHasBeenGCed)
 {
     // Collect properties of the top-level window, since touching the properties
     // of a DOMWindow affects its internal C++ state.
     collectPropertiesHelper(window, windowHasBeenGCed, []);
 
     propertiesToVerify.sort(function (a, b)
     {
         if (a.property < b.property)
             return -1
@@ skipping 19 matching lines @@
     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.
         return;
     }
 
     // FIXME: Skip MemoryInfo for now, since it's not implemented as a DOMWindowProperty, and has
     // no way of knowing when it's detached. Eventually this should have the same behavior.
     if (path.length >= 2 && (path[0] == 'console' || path[0] == 'performance') && path[1] == 'memory')
         return;
 
-    // TODO(bokan): Skip visualViewport for now since it returns the page-global VisualViewport
-    // object and we have no way of creating a VisualViewport yet. This should be fixed with
-    // crbug.com/604928.
-    if (path[0] == 'visualViewport')
-        return;
-
     // Skip things that are assumed to be constants.
     if (path[path.length - 1].toUpperCase() == path[path.length - 1])
         return;
 
     // Various special cases for legacy reasons. Please do not add entries to this list.
     var propertyPath = path.join('.');
 
     // Connection type depends on the host, skip.
     if (propertyPath == 'navigator.connection.type')
       return;
@@ skipping 62 matching lines @@
             emitExpectedResult(path, "0");
         } else if (type == "boolean") {
             expected = "false";
             if (path == "closed" && windowHasBeenGCed )
                 expected = "true";
             emitExpectedResult(path, expected);
         }
         path.pop();
     }
 }