IntersectionObserver: Always send an initial notification.

third_party/WebKit/LayoutTests/intersection-observer/edge-inclusive-intersection.html

Index: third_party/WebKit/LayoutTests/intersection-observer/edge-inclusive-intersection.html
diff --git a/third_party/WebKit/LayoutTests/intersection-observer/edge-inclusive-intersection.html b/third_party/WebKit/LayoutTests/intersection-observer/edge-inclusive-intersection.html
index 6d5ced2a2ab03dc7c0a6ad12459be492f8be0cfe..47d993326ba18025546a1f93b5c966c841e6f237 100644
--- a/third_party/WebKit/LayoutTests/intersection-observer/edge-inclusive-intersection.html
+++ b/third_party/WebKit/LayoutTests/intersection-observer/edge-inclusive-intersection.html
@@ -40,30 +40,30 @@ runTestCycle(function() {
   observer.observe(target);
   entries = entries.concat(observer.takeRecords());
   assert_equals(entries.length, 0, "No initial notifications.");
-  runTestCycle(step0, "No notifications after first rAF.");
+  runTestCycle(step0, "First rAF.");
 }, "IntersectionObserver should detect and report edge-adjacent and zero-area intersections.");
 
 function step0() {
   runTestCycle(step1, "Set transform=translateY(200px) on target.");
-  assert_equals(entries.length, 0, "entries.length");
+  checkLastEntry(entries, 0, [8, 108, 258, 358, 0, 0, 0, 0, 8, 208, 8, 208, target]);
   target.style.transform = "translateY(200px)";
 }
 
 function step1() {
   runTestCycle(step2, "Set transform=translateY(201px) on target.");
-  checkLastEntry(entries, 0, [8, 108, 208, 308, 8, 108, 208, 208, 8, 208, 8, 208, target]);
+  checkLastEntry(entries, 1, [8, 108, 208, 308, 8, 108, 208, 208, 8, 208, 8, 208, target]);
   target.style.transform = "translateY(201px)";
 }
 
 function step2() {
   runTestCycle(step3, "Set transform=translateY(185px) on target.");
-  checkLastEntry(entries, 1);
+  checkLastEntry(entries, 2);
   target.style.height = "0px";
   target.style.width = "300px";
   target.style.transform = "translateY(185px)";
 }
 
 function step3() {
-  checkLastEntry(entries, 2, [8, 308, 193, 193, 8, 208, 193, 193, 8, 208, 8, 208, target]);
+  checkLastEntry(entries, 3, [8, 308, 193, 193, 8, 208, 193, 193, 8, 208, 8, 208, target]);
 }
 </script>