Rename VisualViewport properties to match updated spec

third_party/WebKit/LayoutTests/fast/dom/viewport/read-viewport-size-in-iframe-causes-layout.html

Index: third_party/WebKit/LayoutTests/fast/dom/viewport/read-viewport-size-in-iframe-causes-layout.html
diff --git a/third_party/WebKit/LayoutTests/fast/dom/viewport/read-viewport-size-in-iframe-causes-layout.html b/third_party/WebKit/LayoutTests/fast/dom/viewport/read-viewport-size-in-iframe-causes-layout.html
index 72e9dd11e4e84f5b60f7f89b1dae288bd3391360..d16acfb15c80fd4a147953223c38ac8255224588 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/viewport/read-viewport-size-in-iframe-causes-layout.html
+++ b/third_party/WebKit/LayoutTests/fast/dom/viewport/read-viewport-size-in-iframe-causes-layout.html
@@ -13,17 +13,17 @@
 <script>
   async_test(function(t) {
     window.onload = t.step_func(function() {
-      assert_equals(frames[0].window.visualViewport.clientWidth, 200,
+      assert_equals(frames[0].window.view.width, 200,
           "Reading width of iframe viewport should match iframe width.");
-      assert_equals(frames[0].window.visualViewport.clientHeight, 300,
+      assert_equals(frames[0].window.view.height, 300,
           "Reading height of iframe viewport should match iframe height.");
 
       // Add overflow so scrollbars appear.
       frames[0].window.document.body.style.width = "2000px";
       frames[0].window.document.body.style.height = "2000px";
 
-      var viewportWidth = frames[0].window.visualViewport.clientWidth;
-      var viewportHeight = frames[0].window.visualViewport.clientHeight;
+      var viewportWidth = frames[0].window.view.width;
+      var viewportHeight = frames[0].window.view.height;
 
       assert_equals(viewportWidth, frames[0].window.document.documentElement.clientWidth,
           "Reading width of iframe viewport should cause a layout and exclude the new scrollbar.");