Fix crash in debug builds introduced with r21110.

src/arm64/lithium-arm64.cc

Index: src/arm64/lithium-arm64.cc
diff --git a/src/arm64/lithium-arm64.cc b/src/arm64/lithium-arm64.cc
index 03fee2a537c1bd9b4fd92f0195053cf20191dd23..a2c3a3212073a47118dee65cf5367a540857298c 100644
--- a/src/arm64/lithium-arm64.cc
+++ b/src/arm64/lithium-arm64.cc
@@ -360,12 +360,6 @@ void LChunkBuilder::Abort(BailoutReason reason) {
 }
 
 
-void LChunkBuilder::AddDeprecationDependency(Handle<Map> map) {
-  if (map->is_deprecated()) return Abort(kMapBecameDeprecated);
-  chunk_->AddDeprecationDependency(map);
-}
-
-
 LUnallocated* LChunkBuilder::ToUnallocated(Register reg) {
   return new(zone()) LUnallocated(LUnallocated::FIXED_REGISTER,
                                   Register::ToAllocationIndex(reg));
@@ -2256,11 +2250,6 @@ LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) {
     temp0 = TempRegister();
   }
 
-  // Add a deprecation dependency on the transition target map.
-  if (instr->has_transition()) {
-    AddDeprecationDependency(instr->transition_map());
-  }
-
   LStoreNamedField* result =
       new(zone()) LStoreNamedField(object, value, temp0, temp1);
   if (instr->field_representation().IsHeapObject() &&