Add testing of generated (ARM) baseline decoders using hand-written decoders.

src/trusted/validator_arm/actual_vs_baseline.cc

Index: src/trusted/validator_arm/actual_vs_baseline.cc
===================================================================
--- src/trusted/validator_arm/actual_vs_baseline.cc	(revision 10678)
+++ src/trusted/validator_arm/actual_vs_baseline.cc	(working copy)
@@ -24,6 +24,11 @@
       actual_decoder_(actual_.named_decoder()),
       baseline_decoder_(baseline_.named_decoder()) {}
 
+bool ActualVsBaselineTester::DoApplySanityChecks() {
+  return baseline_tester_.ApplySanityChecks(
+      inst_, baseline_tester_.GetInstDecoder());
+}
+
 void ActualVsBaselineTester::ProcessMatch() {
   baseline_tester_.InjectInstruction(inst_);
   const NamedClassDecoder& decoder = baseline_tester_.GetInstDecoder();
@@ -36,7 +41,7 @@
   if (nacl_arm_dec::MAY_BE_SAFE == decoder.safety(inst_)) {
     // Run sanity baseline checks, to see that the baseline is
     // correct.
-    if (!baseline_tester_.ApplySanityChecks(inst_, decoder)) {
+    if (!DoApplySanityChecks()) {
       // The sanity checks found a serious issue and already reported
       // it.  don't bother to report additional problems.
       return;