Add flag trap_on_stub_deopt. We want to be able to trap on hydrogen stub bailouts.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 34e601ccaa386a3eded1aad2b94fefccaf29bf56..2dd17ca7771252fff46d2773d958574b8e924161 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -761,7 +761,7 @@ void LCodeGen::DeoptimizeIf(Condition cc,
     return;
   }
 
-  if (FLAG_trap_on_deopt && info()->IsOptimizing()) {
+  if (info()->ShouldTrapOnDeopt()) {
     Label skip;
     if (cc != al) {
       __ Branch(&skip, NegateCondition(cc), src1, src2);