Fixes tests that use internals.observeGC to work with Ignition.

third_party/WebKit/LayoutTests/editing/input/text-input-controller-leak-document.html

Index: third_party/WebKit/LayoutTests/editing/input/text-input-controller-leak-document.html
diff --git a/third_party/WebKit/LayoutTests/editing/input/text-input-controller-leak-document.html b/third_party/WebKit/LayoutTests/editing/input/text-input-controller-leak-document.html
index 06e65c066f443b795aa844588804f375c755b69a..5a70d17d4cf214b0e70a40ab39286bca0f5d3c26 100644
--- a/third_party/WebKit/LayoutTests/editing/input/text-input-controller-leak-document.html
+++ b/third_party/WebKit/LayoutTests/editing/input/text-input-controller-leak-document.html
@@ -3,13 +3,20 @@
     <input id='text' type='text'></input>
 
     <script src="../../resources/js-test.js"></script>
+    <script src="../../resources/observeGC.js"></script>
     <script>
         var input = document.getElementById('text');
         input.focus();
         textInputController.setMarkedText("hello", 0, 5);
-        var markedRangeResultGC = internals.observeGC(textInputController.markedRange());
-        var selectedRangeResultGC = internals.observeGC(textInputController.selectedRange());
-        var firstRectForCharacterRangeGC = internals.observeGC(textInputController.firstRectForCharacterRange(0, 0));
+        var markedRangeResultGC = observeGC(() => {
+                return textInputController.markedRange();
+            });
+        var selectedRangeResultGC = observeGC(() => {
+                return textInputController.selectedRange();
+            });
+        var firstRectForCharacterRangeGC = observeGC(() => {
+                return textInputController.firstRectForCharacterRange(0, 0);
+            });
         gc();
         shouldBeTrue('markedRangeResultGC.wasCollected');
         shouldBeTrue('selectedRangeResultGC.wasCollected');