Remove plumbing for inert-visual-viewport flag

third_party/WebKit/LayoutTests/fast/history/scroll-restoration/scroll-restoration-scale-not-impacted.html

Index: third_party/WebKit/LayoutTests/fast/history/scroll-restoration/scroll-restoration-scale-not-impacted.html
diff --git a/third_party/WebKit/LayoutTests/fast/history/scroll-restoration/scroll-restoration-scale-not-impacted.html b/third_party/WebKit/LayoutTests/fast/history/scroll-restoration/scroll-restoration-scale-not-impacted.html
index 6d076424005b5d67837681807debf6c4e8af1971..f85418934c9575b76045b0f7be5d6ff120ec1d65 100644
--- a/third_party/WebKit/LayoutTests/fast/history/scroll-restoration/scroll-restoration-scale-not-impacted.html
+++ b/third_party/WebKit/LayoutTests/fast/history/scroll-restoration/scroll-restoration-scale-not-impacted.html
@@ -17,9 +17,10 @@
       document.body.offsetTop; // force layout
       if (window.name != 'verification') {
         assert_array_equals([window.innerWidth, window.innerHeight], [800, 600], 'initial page size is valid');
-        if (window.internals)
+        if (window.internals) {
           window.internals.setPageScaleFactor(2);
-        assert_array_equals([window.innerWidth, window.innerHeight], [400, 300], 'page is scaled');
+          assert_array_equals([internals.visualViewportWidth(), internals.visualViewportHeight()], [400, 300], 'page is scaled');
+        }
 
         history.scrollRestoration = 'manual';
         window.scrollTo(100, 200);
@@ -31,7 +32,7 @@
           window.location = "data:text/html,<script>history.back();</scr" + "ipt>";
         }, 0);
       } else {
-        assert_array_equals([window.innerWidth, window.innerHeight], [400, 300], 'page scale is restored');
+        assert_array_equals([internals.visualViewportWidth(), internals.visualViewportHeight()], [400, 300], 'page scale is restored');
         assert_array_equals([window.scrollX, window.scrollY], [0, 0], 'scroll position is not restored');
         // clean up
         window.name = '';
@@ -41,4 +42,4 @@
       }
     }));
   }, 'Setting scrollRestoration to manual should not affect scale restoration');
-</script>
+</script>