Revert of Retry "Replace RenderFullScreen with top layer"

LayoutTests/fullscreen/anonymous-block-merge-crash.html

Index: LayoutTests/fullscreen/anonymous-block-merge-crash.html
diff --git a/LayoutTests/fullscreen/anonymous-block-merge-crash.html b/LayoutTests/fullscreen/anonymous-block-merge-crash.html
index 1e7ed8e740a46ebe13d2fd6fe5034561e26692eb..b5e4b789646d5b1566f6ced2fecdd89274f215d6 100644
--- a/LayoutTests/fullscreen/anonymous-block-merge-crash.html
+++ b/LayoutTests/fullscreen/anonymous-block-merge-crash.html
@@ -5,16 +5,10 @@
   } else {
     var span = document.getElementsByTagName('span')[0];
 
-    count = 0;
     document.onwebkitfullscreenchange = function(event) {
-      count++;
-      if (count == 1) {
-          document.body.appendChild(document.createElement('div'));
-          document.webkitCancelFullScreen();
-          return;
-      }
-      if (testRunner && count == 2)
-          testRunner.notifyDone();
+      document.body.appendChild(document.createElement('div'));
+      document.webkitCancelFullScreen();
+      testRunner.notifyDone();
     };
 
     runWithKeyDown(function(){span.webkitRequestFullScreen()});