Various API changes

test/cctest/test-mark-compact.cc

Index: test/cctest/test-mark-compact.cc
diff --git a/test/cctest/test-mark-compact.cc b/test/cctest/test-mark-compact.cc
index 36b286a6a875f66a94b6a4a2ed312439efa06e2d..d468c24ad3958ab3b9858dc612323a0cd742d74a 100644
--- a/test/cctest/test-mark-compact.cc
+++ b/test/cctest/test-mark-compact.cc
@@ -244,7 +244,7 @@ TEST(GCCallback) {
 
 
 static int NumberOfWeakCalls = 0;
-static void WeakPointerCallback(v8::Persistent<v8::Object> handle, void* id) {
+static void WeakPointerCallback(v8::Persistent<v8::Value> handle, void* id) {
   NumberOfWeakCalls++;
 }