Remove multiple GC calls and replace GCController.collect calls with GCController.collectAll

LayoutTests/fast/js/script-tests/with-scope-gc.js

Index: LayoutTests/fast/js/script-tests/with-scope-gc.js
diff --git a/LayoutTests/fast/js/script-tests/with-scope-gc.js b/LayoutTests/fast/js/script-tests/with-scope-gc.js
index e8cabe7eb88b7df67a67e46a70d9e5c8a4dceedb..a661de8e09613a6eba452f8c32e16a38afdf725a 100644
--- a/LayoutTests/fast/js/script-tests/with-scope-gc.js
+++ b/LayoutTests/fast/js/script-tests/with-scope-gc.js
@@ -5,7 +5,7 @@ description(
 function gc()
 {
     if (this.GCController)
-        GCController.collect();
+        GCController.collectAll();
     else
         for (var i = 0; i < 10000; ++i) // Allocate a sufficient number of objects to force a GC.
             ({});