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

src/arm/assembler-arm-inl.h

Index: src/arm/assembler-arm-inl.h
diff --git a/src/arm/assembler-arm-inl.h b/src/arm/assembler-arm-inl.h
index a1d1e1b5670b57bc77a063c588748dd632dcb492..9a0d0ca269e60a79099e1842c8754b793df81d08 100644
--- a/src/arm/assembler-arm-inl.h
+++ b/src/arm/assembler-arm-inl.h
@@ -207,6 +207,9 @@ void RelocInfo::set_target_cell(Cell* cell, WriteBarrierMode mode) {
 
 
 static const int kNoCodeAgeSequenceLength = 3;
+static const int kPreAgeCodeNopType = lr.code();
+static const int kNoAgeCodeNopType = ip.code();
+
 
 Code* RelocInfo::code_age_stub() {
   ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE);