Update V8 to r6768 as required by WebKit r78450

Change-Id: Ib8868ff7147a76547a8d1d85f257ebe8546a3d3f
diff --git a/src/type-info.cc b/src/type-info.cc
index f4f65e9..0bb7262 100644
--- a/src/type-info.cc
+++ b/src/type-info.cc
@@ -171,7 +171,7 @@
 }
 
 
-TypeInfo TypeFeedbackOracle::CompareType(CompareOperation* expr, Side side) {
+TypeInfo TypeFeedbackOracle::CompareType(CompareOperation* expr) {
   Handle<Object> object = GetElement(map_, expr->position());
   TypeInfo unknown = TypeInfo::Unknown();
   if (!object->IsCode()) return unknown;
@@ -198,7 +198,7 @@
 }
 
 
-TypeInfo TypeFeedbackOracle::BinaryType(BinaryOperation* expr, Side side) {
+TypeInfo TypeFeedbackOracle::BinaryType(BinaryOperation* expr) {
   Handle<Object> object = GetElement(map_, expr->position());
   TypeInfo unknown = TypeInfo::Unknown();
   if (!object->IsCode()) return unknown;