Revert of [regexp] Remove remainder of native RegExpExecStub

src/interface-descriptors.h

Index: src/interface-descriptors.h
diff --git a/src/interface-descriptors.h b/src/interface-descriptors.h
index 4a42862afa0b678969684db02a849b7683271abf..b97c45cd0e902829b8d04d2b22fb2e4aeed3c7ec 100644
--- a/src/interface-descriptors.h
+++ b/src/interface-descriptors.h
@@ -49,6 +49,7 @@
   V(CallTrampoline)                        \
   V(ConstructStub)                         \
   V(ConstructTrampoline)                   \
+  V(RegExpExec)                            \
   V(TransitionElementsKind)                \
   V(AllocateHeapNumber)                    \
   V(Builtin)                               \
@@ -612,6 +613,19 @@
   DECLARE_DESCRIPTOR(CallConstructDescriptor, CallInterfaceDescriptor)
 };
 
+class RegExpExecDescriptor : public CallInterfaceDescriptor {
+ public:
+  DEFINE_PARAMETERS(kString, kLastIndex, kStringStart, kStringEnd, kCode)
+  DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(RegExpExecDescriptor,
+                                               CallInterfaceDescriptor)
+
+  static const Register StringRegister();
+  static const Register LastIndexRegister();
+  static const Register StringStartRegister();
+  static const Register StringEndRegister();
+  static const Register CodeRegister();
+};
+
 class TransitionElementsKindDescriptor : public CallInterfaceDescriptor {
  public:
   DEFINE_PARAMETERS(kObject, kMap)