Remove gc from worker-event-listener.js

Bug: 706285
Change-Id: I21524ca6076351b4fd056443add699dbad62841b
Reviewed-on: https://chromium-review.googlesource.com/789734Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Jeremy Roman <jbroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519797}

third_party/WebKit/LayoutTests/fast/workers/resources/shared-worker-common.js

@@ -8,13 +8,6 @@ onconnect = function(event) {
     event.ports[0].onmessage = function(evt) { handleMessage(evt, event.ports[0]); };
 };
 
-function gc()
-{
-    for (var i = 0; i < 10000; i++) { // force garbage collection (FF requires about 9K allocations before a collect)
-        var s = new String("abc");
-    }
-}
-
 function handleMessage(event, port) {
     self.port = port;
     if (event.data == "ping")

third_party/WebKit/LayoutTests/fast/workers/resources/worker-common.js

-function gc()
-{
-    for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
-        var s = new String("abc");
-    }
-}
-
 onmessage = function(evt)
 {
     gc();

third_party/WebKit/LayoutTests/fast/workers/resources/worker-event-listener.js

-function gc()
-{
-    for (var i = 0; i < 10000; i++) { // > force garbage collection (FF requires about 9K allocations before a collect)
-        var s = new String("abc");
-    }
-}
-
 function onmessage(evt)
 {
     postMessage("SUCCESS");