Add tests for fullscreenchange and fullscreenerror event timing

third_party/WebKit/LayoutTests/imported/wpt/MANIFEST.json

Index: third_party/WebKit/LayoutTests/imported/wpt/MANIFEST.json
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/MANIFEST.json b/third_party/WebKit/LayoutTests/imported/wpt/MANIFEST.json
index 3e32b25074a78575abb5c476d182b428f337bbfa..1a1068d575fd0dc391732d3fe4098a1d0044f938 100644
--- a/third_party/WebKit/LayoutTests/imported/wpt/MANIFEST.json
+++ b/third_party/WebKit/LayoutTests/imported/wpt/MANIFEST.json
@@ -17,6 +17,12 @@
             "url": "/fullscreen/api/document-exit-fullscreen-manual.html"
           }
         ],
+        "fullscreen/api/document-exit-fullscreen-timing-manual.html": [
+          {
+            "path": "fullscreen/api/document-exit-fullscreen-timing-manual.html",
+            "url": "/fullscreen/api/document-exit-fullscreen-timing-manual.html"
+          }
+        ],
         "fullscreen/api/document-fullscreen-element-manual.html": [
           {
             "path": "fullscreen/api/document-fullscreen-element-manual.html",
@@ -89,6 +95,12 @@
             "url": "/fullscreen/api/element-request-fullscreen-svg-svg-manual.html"
           }
         ],
+        "fullscreen/api/element-request-fullscreen-timing-manual.html": [
+          {
+            "path": "fullscreen/api/element-request-fullscreen-timing-manual.html",
+            "url": "/fullscreen/api/element-request-fullscreen-timing-manual.html"
+          }
+        ],
         "fullscreen/api/element-request-fullscreen-top-manual.html": [
           {
             "path": "fullscreen/api/element-request-fullscreen-top-manual.html",