Fixed image-sizes-js-change flakiness

LayoutTests/fast/dom/HTMLImageElement/image-sizes-js-change.html

Index: LayoutTests/fast/dom/HTMLImageElement/image-sizes-js-change.html
diff --git a/LayoutTests/fast/dom/HTMLImageElement/image-sizes-js-change.html b/LayoutTests/fast/dom/HTMLImageElement/image-sizes-js-change.html
index 3a6255806b806c079f3694a3b0c822ea08102ef0..4f819bae49e7bcee8ac56b976eb9f31f0af47d32 100644
--- a/LayoutTests/fast/dom/HTMLImageElement/image-sizes-js-change.html
+++ b/LayoutTests/fast/dom/HTMLImageElement/image-sizes-js-change.html
@@ -5,6 +5,9 @@
 <script>
     if (window.testRunner)
         testRunner.dumpAsText();
+    
+    if (internals)
+        internals.evictAllResources();
 
     function updateSrc() {
         var img = document.getElementById("foo");
@@ -16,12 +19,16 @@
     }
 
     addEventListener("DOMContentLoaded", function() {
-        if (window.testRunner && sessionStorage.pageReloaded)
-            testRunner.dumpResourceRequestCallbacks();
         updateSrc();
     }, false);
     addEventListener("load", function() {
         shouldBe('currentSrcFileName("foo")', '"image-set-4x.png"');
+        if (internals) {
+            shouldBeTrue('internals.isLoadingFromMemoryCache("resources/image-set-4x.png")');
+            shouldBeFalse('internals.isLoadingFromMemoryCache("../../hidpi/resources/image-set-2x.png")');
+            shouldBeFalse('internals.isLoadingFromMemoryCache("../../hidpi/resources/image-set-1x.png")');
+            shouldBeFalse('internals.isLoadingFromMemoryCache("resources/blue-100-px-square.png")');
+        }
     }, false);
 </script>
 <img id="foo">