Change BKPT and UDF encodings on ARM.

src/trusted/validator_arm/inst_classes_testers.h

Index: src/trusted/validator_arm/inst_classes_testers.h
diff --git a/src/trusted/validator_arm/inst_classes_testers.h b/src/trusted/validator_arm/inst_classes_testers.h
index 4640ccbc38f614293e4a1ebf2a69d21cd917d110..ca97ebb4f688c58f9af8549868230635d657e901 100644
--- a/src/trusted/validator_arm/inst_classes_testers.h
+++ b/src/trusted/validator_arm/inst_classes_testers.h
@@ -2283,17 +2283,17 @@ class InstructionBarrierTester : public BarrierInstTester {
   NACL_DISALLOW_COPY_AND_ASSIGN(InstructionBarrierTester);
 };
 
-// Implements a decoder tester for a Roadblock.
-class RoadblockTester : public CondDecoderTester {
+// Implements a decoder tester for a PermanentlyUndefined.
+class PermanentlyUndefinedTester : public CondDecoderTester {
  public:
-  explicit RoadblockTester(const NamedClassDecoder& decoder)
+  explicit PermanentlyUndefinedTester(const NamedClassDecoder& decoder)
       : CondDecoderTester(decoder) {}
   virtual bool ApplySanityChecks(
       nacl_arm_dec::Instruction inst,
       const NamedClassDecoder& decoder);
 
  private:
-  NACL_DISALLOW_COPY_AND_ASSIGN(RoadblockTester);
+  NACL_DISALLOW_COPY_AND_ASSIGN(PermanentlyUndefinedTester);
 };
 
 }  // namespace nacl_arm_test