Remove early returns in fullscreen tests

LayoutTests/fullscreen/full-screen-line-boxes-crash.html

Index: LayoutTests/fullscreen/full-screen-line-boxes-crash.html
diff --git a/LayoutTests/fullscreen/full-screen-line-boxes-crash.html b/LayoutTests/fullscreen/full-screen-line-boxes-crash.html
index fc5865f1868730273cf7dedc0277b86409cf3764..7b46f4514f364d5eff1d54be8df2c73930015e09 100644
--- a/LayoutTests/fullscreen/full-screen-line-boxes-crash.html
+++ b/LayoutTests/fullscreen/full-screen-line-boxes-crash.html
@@ -6,24 +6,19 @@ PASS.
 <span style="margin-top: 1em;">WebKit didn't crash.
 <script src="full-screen-test.js"></script>
 <script>
-    if (Element.prototype.webkitRequestFullScreen == undefined) {
-        logResult(false, "Element.prototype.webkitRequestFullScreen == undefined");
-        endTest();
-    } else {
-        var fullscreenChanged = function(event)
-        {
-            callback(event)
-        };
-        waitForEventOnce(document, "webkitfullscreenchange", fullscreenChanged);
-        var span = document.getElementsByTagName('span')[0];
-        var spanEnteredFullScreen = function() {
-            runWithKeyDown(function() { document.documentElement.webkitRequestFullScreen(); });
-            setTimeout("endTest()", 0);
-        };
+    var fullscreenChanged = function(event)
+    {
+        callback(event)
+    };
+    waitForEventOnce(document, "webkitfullscreenchange", fullscreenChanged);
+    var span = document.getElementsByTagName('span')[0];
+    var spanEnteredFullScreen = function() {
+        runWithKeyDown(function() { document.documentElement.webkitRequestFullScreen(); });
+        setTimeout("endTest()", 0);
+    };
 
-        callback = spanEnteredFullScreen;
-        runWithKeyDown(function() { span.webkitRequestFullScreen(); });
-    }
+    callback = spanEnteredFullScreen;
+    runWithKeyDown(function() { span.webkitRequestFullScreen(); });
 </script>
 </body>
 </html>