Move sync point from TransferResourceList to individual TransferResources

cc/transferable_resource.cc

Index: cc/transferable_resource.cc
diff --git a/cc/transferable_resource.cc b/cc/transferable_resource.cc
index 9d5eeb460aa4b9b3cc880c37c7e9d2b3318e541c..886b4423ec09a617e126db31fc4784b6e4162cd5 100644
--- a/cc/transferable_resource.cc
+++ b/cc/transferable_resource.cc
@@ -25,19 +25,13 @@ void Mailbox::setName(const int8* n) {
 }
 
 TransferableResource::TransferableResource()
-    : id(0)
-    , format(0)
-    , filter(0) {
+    : id(0),
+      sync_point(0),
+      format(0),
+      filter(0) {
 }
 
 TransferableResource::~TransferableResource() {
 }
 
-TransferableResourceList::TransferableResourceList()
-    : sync_point(0) {
-}
-
-TransferableResourceList::~TransferableResourceList() {
-}
-
 }  // namespace cc