ARM validator: continue with extra_load_store_instructions.

src/trusted/validator_arm/actual_classes.h

Index: src/trusted/validator_arm/actual_classes.h
diff --git a/src/trusted/validator_arm/actual_classes.h b/src/trusted/validator_arm/actual_classes.h
index 1028c85a200f1a161ccff17909ef34cebc0f2ba9..94809665a4181f53db8151dd965e525167cbe4c0 100644
--- a/src/trusted/validator_arm/actual_classes.h
+++ b/src/trusted/validator_arm/actual_classes.h
@@ -452,10 +452,12 @@ class LoadBasedMemoryWithWriteBack : public LoadBasedMemory {
     return indexing.IsPostIndexing(i) || writes.IsDefined(i);
   }
 
-  LoadBasedMemoryWithWriteBack() {}
   virtual SafetyLevel safety(Instruction i) const;
   virtual RegisterList defs(Instruction i) const;
 
+ protected:
+  LoadBasedMemoryWithWriteBack() {}
+
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(LoadBasedMemoryWithWriteBack);
 };
@@ -550,10 +552,12 @@ class StoreBasedMemoryWithWriteBack : public BasedAddressUsingRn {
     return indexing.IsPostIndexing(i) || writes.IsDefined(i);
   }
 
-  StoreBasedMemoryWithWriteBack() {}
   virtual SafetyLevel safety(Instruction i) const;
   virtual RegisterList defs(Instruction i) const;
 
+ protected:
+  StoreBasedMemoryWithWriteBack() {}
+
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(StoreBasedMemoryWithWriteBack);
 };
@@ -703,6 +707,7 @@ class Roadblock : public OldClassDecoder {
 class Breakpoint : public Roadblock {
  public:
   Breakpoint() {}
+  virtual SafetyLevel safety(Instruction i) const;
   virtual bool is_literal_pool_head(Instruction i) const;
 
  private: