Remove early returns in fullscreen tests

LayoutTests/fullscreen/full-screen-crash-offsetLeft.html

Index: LayoutTests/fullscreen/full-screen-crash-offsetLeft.html
diff --git a/LayoutTests/fullscreen/full-screen-crash-offsetLeft.html b/LayoutTests/fullscreen/full-screen-crash-offsetLeft.html
index 69a7f9eff9092268b19ee130c466756a17c31b9f..fe2fa8f0f9ba3c5433477f52df838e7d75897d31 100644
--- a/LayoutTests/fullscreen/full-screen-crash-offsetLeft.html
+++ b/LayoutTests/fullscreen/full-screen-crash-offsetLeft.html
@@ -5,27 +5,22 @@
 <p><a href="https://bugs.webkit.org/show_bug.cgi?id=89785">Bug 89785</a>: REGRESSION(r116446): Crash in RenderBoxModelObject::adjustedPositionRelativeToOffsetParent</p>
 <script src="full-screen-test.js"></script>
 <script>
-    if ("webkitRequestFullScreen" in Element.prototype) {
-        if (!window.testRunner)
-            consoleWrite("To manually test this bug, switch to fullscreen. It shouldn't crash.");
+    if (!window.testRunner)
+        consoleWrite("To manually test this bug, switch to fullscreen. It shouldn't crash.");
 
-        video = document.getElementsByTagName("video")[0];
-        var fullscreenChanged = function(event)
-        {
-            video.offsetLeft;
-            video.offsetTop;
-            consoleWrite("PASSED, the page didn't crash.");
-            endTest();
-        };
-        document.addEventListener('webkitfullscreenchange', fullscreenChanged);
-
-        runWithKeyDown(function () {
-            video.webkitRequestFullScreen();
-        });
-    } else {
-        consoleWrite("FAILED, couldn't find webkitRequestFullScreen.");
+    video = document.getElementsByTagName("video")[0];
+    var fullscreenChanged = function(event)
+    {
+        video.offsetLeft;
+        video.offsetTop;
+        consoleWrite("PASSED, the page didn't crash.");
         endTest();
-    }
+    };
+    document.addEventListener('webkitfullscreenchange', fullscreenChanged);
+
+    runWithKeyDown(function () {
+        video.webkitRequestFullScreen();
+    });
 </script>
 </body>
 </html>