Cleanup LayoutTests that define a function gc().

third_party/WebKit/LayoutTests/images/destroyed-image-load-event.html

Index: third_party/WebKit/LayoutTests/images/destroyed-image-load-event.html
diff --git a/third_party/WebKit/LayoutTests/images/destroyed-image-load-event.html b/third_party/WebKit/LayoutTests/images/destroyed-image-load-event.html
index d0bb91cbb6f5f1d021d97cedaf97e9d5a48b25e2..d317d3245825ed85c0dcc21fa1c1e89ceb9eb7a5 100644
--- a/third_party/WebKit/LayoutTests/images/destroyed-image-load-event.html
+++ b/third_party/WebKit/LayoutTests/images/destroyed-image-load-event.html
@@ -3,22 +3,13 @@
 WebCore::ImageEventSender::dispatchPendingEvents() crashes in certain conditions.</p>
 <div id="testRun"></div>
 <div id="container"></div>
+<script src="../resources/gc.js"></script>
 <script>
 if (window.testRunner) {
     testRunner.waitUntilDone();
     testRunner.dumpAsText();
 }
 
-function gc()
-{
-    if (window.GCController)
-        return GCController.collect();
-
-    for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
-        var s = new String("abc");
-    }
-}
-
 var container = document.getElementById("container");
 var testRunDiv = document.getElementById("testRun");
 var remainingTestRuns = 30;