Fix crash in debug builds introduced with r21110.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 19915425cf8b6808b59d7007bc5f42ed1ac839a0..bfeffd3f15f39cf9e6a7f7b7570d712f0e16c00f 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -69,12 +69,6 @@ void LCodeGen::FinishCode(Handle<Code> code) {
 }
 
 
-void LChunkBuilder::Abort(BailoutReason reason) {
-  info()->set_bailout_reason(reason);
-  status_ = ABORTED;
-}
-
-
 #ifdef _MSC_VER
 void LCodeGen::MakeSureStackPagesMapped(int offset) {
   const int kPageSize = 4 * KB;
@@ -3996,7 +3990,6 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
   }
 
   Register object = ToRegister(instr->object());
-  Handle<Map> transition = instr->transition();
   SmiCheck check_needed = hinstr->value()->IsHeapObject()
                           ? OMIT_SMI_CHECK : INLINE_SMI_CHECK;
 
@@ -4020,15 +4013,17 @@ void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) {
       }
     }
   } else if (representation.IsDouble()) {
-    ASSERT(transition.is_null());
     ASSERT(access.IsInobject());
+    ASSERT(!hinstr->has_transition());
     ASSERT(!hinstr->NeedsWriteBarrier());
     XMMRegister value = ToDoubleRegister(instr->value());
     __ movsd(FieldOperand(object, offset), value);
     return;
   }
 
-  if (!transition.is_null()) {
+  if (hinstr->has_transition()) {
+    Handle<Map> transition = hinstr->transition_map();
+    AddDeprecationDependency(transition);
     if (!hinstr->NeedsWriteBarrierForMap()) {
       __ Move(FieldOperand(object, HeapObject::kMapOffset), transition);
     } else {