[ic] Extract load IC proto array handlers handling to a separate stub.

src/mips/interface-descriptors-mips.cc

Index: src/mips/interface-descriptors-mips.cc
diff --git a/src/mips/interface-descriptors-mips.cc b/src/mips/interface-descriptors-mips.cc
index 46d7c5247d8327e77056d281acd32d220cc986c1..486ae6832456c6b839c984eb727bb49367d26ef4 100644
--- a/src/mips/interface-descriptors-mips.cc
+++ b/src/mips/interface-descriptors-mips.cc
@@ -29,9 +29,9 @@ const Register LoadDescriptor::ReceiverRegister() { return a1; }
 const Register LoadDescriptor::NameRegister() { return a2; }
 const Register LoadDescriptor::SlotRegister() { return a0; }
 
-
 const Register LoadWithVectorDescriptor::VectorRegister() { return a3; }
 
+const Register LoadICProtoArrayDescriptor::HandlerRegister() { return t0; }
 
 const Register StoreDescriptor::ReceiverRegister() { return a1; }
 const Register StoreDescriptor::NameRegister() { return a2; }