Enable preaging of code objects when --optimize-for-size.

src/mips/assembler-mips-inl.h

Index: src/mips/assembler-mips-inl.h
diff --git a/src/mips/assembler-mips-inl.h b/src/mips/assembler-mips-inl.h
index 2fa6804d1982c6e352dfc7707af608225d0e6a68..de91051ed025b00d23b29c4d75cae8042423068b 100644
--- a/src/mips/assembler-mips-inl.h
+++ b/src/mips/assembler-mips-inl.h
@@ -261,6 +261,13 @@ void RelocInfo::set_target_cell(Cell* cell, WriteBarrierMode mode) {
 
 static const int kNoCodeAgeSequenceLength = 7;
 
+
+Handle<Object> RelocInfo::code_age_stub_handle(Assembler* origin) {
+  UNREACHABLE();  // This should never be reached on Arm.
+  return Handle<Object>();
+}
+
+
 Code* RelocInfo::code_age_stub() {
   ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE);
   return Code::GetCodeFromTargetAddress(