Oilpan: introduce sticky forcedForTesting flag to ensure that a precise

LayoutTests/svg/animations/smil-leak-elements.svg

Index: LayoutTests/svg/animations/smil-leak-elements.svg
diff --git a/LayoutTests/svg/animations/smil-leak-elements.svg b/LayoutTests/svg/animations/smil-leak-elements.svg
index 040aec71988d15e416f77ab70b76908755890be6..f44736184263cbdad4d8073499656df0ebf12364 100644
--- a/LayoutTests/svg/animations/smil-leak-elements.svg
+++ b/LayoutTests/svg/animations/smil-leak-elements.svg
@@ -1,6 +1,7 @@
-<svg id="svg" xmlns="http://www.w3.org/2000/svg" onload="load()">
+<svg id="svg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" onload="load()">
 <g id="g"/>
 <text x="50" y="50" id="log"/>
+<script xlink:href="../../resources/js-test.js"></script>
 <script id="script">
 <![CDATA[
 
@@ -32,21 +33,20 @@ function createAnimatedRect() {
 
 function cleanup() {
     // Collect garbage before recording starting live node count, in case there are live elements from previous tests.
-    GCController.collectAll();
-    var originalLiveElements = internals.numberOfLiveNodes();
+    collectGarbage(function() {
+        var originalLiveElements = internals.numberOfLiveNodes();
 
-    while (g.hasChildNodes())
-        g.removeChild(g.lastChild);
-
-    GCController.collectAll();
-
-    var liveDelta = originalLiveElements - internals.numberOfLiveNodes() - 200;
-    if (liveDelta == 0)
-        log("PASS");
-    else
-        log("FAIL: " + liveDelta + " extra live node(s)");
-
-    testRunner.notifyDone();
+        while (g.hasChildNodes())
+            g.removeChild(g.lastChild);
+        collectGarbage(function() {
+            var liveDelta = originalLiveElements - internals.numberOfLiveNodes() - 200;
+            if (liveDelta == 0)
+                log("PASS");
+            else
+                log("FAIL: " + liveDelta + " extra live node(s)");
+            testRunner.notifyDone();
+        });
+    });
 }
 
 function startTest() {