Remove early returns in fullscreen tests

LayoutTests/fullscreen/full-screen-request-rejected.html

Index: LayoutTests/fullscreen/full-screen-request-rejected.html
diff --git a/LayoutTests/fullscreen/full-screen-request-rejected.html b/LayoutTests/fullscreen/full-screen-request-rejected.html
index 9181168045f05cd207341caa3f0b12432e5ca091..9c2b45a374800d89863f548fb8beba43a608dabf 100644
--- a/LayoutTests/fullscreen/full-screen-request-rejected.html
+++ b/LayoutTests/fullscreen/full-screen-request-rejected.html
@@ -2,18 +2,12 @@
 <script src="full-screen-test.js"></script>
 <div>This tests that a full-screen request which is not user-initiated will be rejected.
 <script>
-    // Bail out early if the full screen API is not enabled or is missing:
-    if (Element.prototype.webkitRequestFullScreen == undefined) {
-        logResult(false, "Element.prototype.webkitRequestFullScreen == undefined");
-        endTest();
-    } else {
-        waitForEvent(document, 'webkitfullscreenchange', function() {
-           logResult("Entered full screen.", false); 
-           endTest();
-        });
-        if (testRunner)
-            testRunner.setPopupBlockingEnabled(true);
-        waitForEventAndEnd(document, 'webkitfullscreenerror');
-        document.documentElement.webkitRequestFullScreen();
-    }
+    waitForEvent(document, 'webkitfullscreenchange', function() {
+       logResult("Entered full screen.", false);
+       endTest();
+    });
+    if (testRunner)
+        testRunner.setPopupBlockingEnabled(true);
+    waitForEventAndEnd(document, 'webkitfullscreenerror');
+    document.documentElement.webkitRequestFullScreen();
 </script>