Hydrogenize (and share) part of StoreTransition handler as a StoreTransitionStub.

src/ic/handler-compiler.h

Index: src/ic/handler-compiler.h
diff --git a/src/ic/handler-compiler.h b/src/ic/handler-compiler.h
index f033f3f2d96d7ebeacf16c103c74c063ded1a1f4..4fedd4e8d78c7127bff6feef5becf58dd724ecb8 100644
--- a/src/ic/handler-compiler.h
+++ b/src/ic/handler-compiler.h
@@ -230,14 +230,13 @@ class NamedStoreHandlerCompiler : public PropertyHandlerCompiler {
   void GenerateRestoreName(Label* label, Handle<Name> name);
 
  private:
-  void GenerateStoreTransition(Handle<Map> transition, Handle<Name> name,
-                               Register receiver_reg, Register name_reg,
-                               Register value_reg, Register scratch1,
-                               Register scratch2, Register scratch3,
-                               Label* miss_label, Label* slow);
-
-  void GenerateStoreField(LookupIterator* lookup, Register value_reg,
-                          Label* miss_label);
+  void GenerateRestoreNameAndMap(Handle<Name> name, Handle<Map> transition);
+
+  void GenerateConstantCheck(Object* constant, Register value_reg,
+                             Label* miss_label);
+
+  void GenerateFieldTypeChecks(HeapType* field_type, Register value_reg,
+                               Label* miss_label);
 
   static Builtins::Name SlowBuiltin(Code::Kind kind) {
     switch (kind) {