Convert IntersectionObserver tests to use testRunner.runIdleTasks.

third_party/WebKit/LayoutTests/http/tests/intersection-observer/resources/helper-functions.js

Index: third_party/WebKit/LayoutTests/http/tests/intersection-observer/resources/helper-functions.js
diff --git a/third_party/WebKit/LayoutTests/http/tests/intersection-observer/resources/helper-functions.js b/third_party/WebKit/LayoutTests/http/tests/intersection-observer/resources/helper-functions.js
deleted file mode 100644
index 733a01dd0ba88ed341427f93a1a8760a3384ab83..0000000000000000000000000000000000000000
--- a/third_party/WebKit/LayoutTests/http/tests/intersection-observer/resources/helper-functions.js
+++ /dev/null
@@ -1,33 +0,0 @@
-function clientRectToJson(rect) {
-  if (!rect)
-    return null;
-  return {
-    top: rect.top,
-    right: rect.right,
-    bottom: rect.bottom,
-    left: rect.left,
-    width: rect.width,
-    height: rect.height
-  };
-}
-
-function coordinatesToClientRectJson(top, right, bottom, left) {
-  return {
-    top: top,
-    right: right,
-    bottom: bottom,
-    left: left,
-    width: right - left,
-    height: bottom - top
-  };
-}
-
-function entryToJson(entry) {
-  return {
-    boundingClientRect: clientRectToJson(entry.boundingClientRect),
-    intersectionRect: clientRectToJson(entry.intersectionRect),
-    rootBounds: clientRectToJson(entry.rootBounds),
-    time: entry.time,
-    target: entry.target.id
-  };
-}