From 8ab6a91cb0ddfb245c5763dcc1c134a087b0d6fe Mon Sep 17 00:00:00 2001
From: Henry Chang <hchang@mozilla.com>
Date: Wed, 12 Jul 2017 10:49:11 +0800
Subject: [PATCH] Bug 1355746 - Part 4. Fix intermittent full screen test
 failures. r=smaug,xidorn

We found that a window will not get focus immediately after exiting full screen
mode on Linux. This seems to be a long-standing issue which surfaces due to the
change of background HTML parsing timing. So, we try to get focus everytime
before requesting full screen mode to ensure the request will not fail because
of the focus issue.

MozReview-Commit-ID: 2pOShFZcq8A

--HG--
extra : rebase_source : 47a9431e02549b483874ddfba804bed0d1c6a534
extra : intermediate-source : 64f74f99771510bc06aaf4e9fc875e61b4c67a75
extra : source : 57f259680880504181191c5fe5fa9688c0692703
---
 dom/html/test/file_fullscreen-api.html      | 2 +-
 dom/html/test/file_fullscreen-prefixed.html | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dom/html/test/file_fullscreen-api.html b/dom/html/test/file_fullscreen-api.html
index b79856d9a660..25eb18aa814b 100644
--- a/dom/html/test/file_fullscreen-api.html
+++ b/dom/html/test/file_fullscreen-api.html
@@ -305,7 +305,7 @@ function testNamespaces(followupTestFn) {
       });
     }
 
-    elem.requestFullscreen();
+    SimpleTest.waitForFocus(() => elem.requestFullscreen());
   }
 
   runNextNamespaceTest();
diff --git a/dom/html/test/file_fullscreen-prefixed.html b/dom/html/test/file_fullscreen-prefixed.html
index 5f3d60196aa3..a7fc4ebe19cb 100644
--- a/dom/html/test/file_fullscreen-prefixed.html
+++ b/dom/html/test/file_fullscreen-prefixed.html
@@ -103,7 +103,7 @@ class TestCase {
         }
       };
       this.changeListeners("add", eventType, handleEvent);
-      actionCallback();
+      SimpleTest.waitForFocus(() => actionCallback());
     });
   }