Merge 88174 - 2011-06-06 Shishir Agrawal <shishir@chromium.org>

LayoutTests/fast/events/page-visibility-transition-test.html

Index: LayoutTests/fast/events/page-visibility-transition-test.html
===================================================================
--- LayoutTests/fast/events/page-visibility-transition-test.html	(revision 88229)
+++ LayoutTests/fast/events/page-visibility-transition-test.html	(working copy)
@@ -22,6 +22,11 @@
         layoutTestController.setPageVisibility("hidden");
 }
 
+function makePagePrerender() {
+    if (window.layoutTestController)
+        layoutTestController.setPageVisibility("prerender");
+}
+
 function checkIsPageVisible() {
     shouldBeEqualToString("document.webkitVisibilityState", "visible");
     shouldBeFalse("document.webkitHidden");
@@ -32,11 +37,17 @@
     shouldBeTrue("document.webkitHidden");
 }
 
+function checkIsPagePrerendering() {
+    shouldBeEqualToString("document.webkitVisibilityState", "prerender");
+    shouldBeTrue("document.webkitHidden");
+}
+
 // We will try to change the visibility states as:
 //  0 - visible. (Initial - i.e. on load).
 //  1 - hidden (should fire event).
 //  2 - hidden (no event).
-//  3 - visible (should fire event).
+//  3 - prerender (should fire event).
+//  4 - visible (should fire event).
 var numVisibilityChanges = 0;
 
 function startTest() {
@@ -61,13 +72,18 @@
         makePageHidden();
         checkIsPageHidden();
         numVisibilityChanges++;
-        makePageVisible();
+        makePagePrerender();
         return;
     } else if (numVisibilityChanges == 2) {
         testFailed("Invalid event fired on same state change.");
         finishTest();
         return;
     } else if (numVisibilityChanges == 3) {
+        checkIsPagePrerendering();
+        numVisibilityChanges++;
+        makePageVisible();
+        return;
+    } else if (numVisibilityChanges == 4) {
         checkIsPageVisible();
         numVisibilityChanges++;
         finishTest();