Make DeviceOrientationEvent.prototype.absolute non-nullable

third_party/WebKit/LayoutTests/fast/dom/DeviceOrientation/resources/basic-operation.js

 // This test can be used to test device orientation event types: 'deviceorientation' and 'deviceorientationabsolute'.
 function testBasicOperation(eventType) {
     window.jsTestIsAsync = true;
     if (!window.testRunner)
         debug('This test can not be run without the TestRunner');
 
     mockAlpha = 1.1;
     mockBeta = 2.2;
     mockGamma = 3.3;
     mockAbsolute = true;
-    testRunner.setMockDeviceOrientation(true, mockAlpha, true, mockBeta, true, mockGamma, true, mockAbsolute);
+    testRunner.setMockDeviceOrientation(true, mockAlpha, true, mockBeta, true, mockGamma, mockAbsolute);
 
     window.addEventListener(eventType, function(e) {
         event = e;
         shouldBe('event.alpha', 'mockAlpha');
         shouldBe('event.beta', 'mockBeta');
         shouldBe('event.gamma', 'mockGamma');
         shouldBe('event.absolute', 'mockAbsolute');
         finishJSTest();
     });
 }
-