Handlify code allocation.

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
diff --git a/src/x64/assembler-x64.cc b/src/x64/assembler-x64.cc
index 19bd82856e4da18fe547069179b6c7b8db94ff66..591ae3c88992d83cd4c1b4a2619ec7945863fe21 100644
--- a/src/x64/assembler-x64.cc
+++ b/src/x64/assembler-x64.cc
@@ -2992,16 +2992,17 @@ void Assembler::RecordComment(const char* msg, bool force) {
 }
 
 
-MaybeObject* Assembler::AllocateConstantPool(Heap* heap) {
+Handle<ConstantPoolArray> Assembler::NewConstantPool(Isolate* isolate) {
   // No out-of-line constant pool support.
-  UNREACHABLE();
-  return NULL;
+  ASSERT(!FLAG_enable_ool_constant_pool);
+  return isolate->factory()->empty_constant_pool_array();
 }
 
 
 void Assembler::PopulateConstantPool(ConstantPoolArray* constant_pool) {
   // No out-of-line constant pool support.
-  UNREACHABLE();
+  ASSERT(!FLAG_enable_ool_constant_pool);
+  return;
 }