Fix problems with sandboxing and the ARM integrated assembler.

src/DartARM32/assembler_arm.h

Index: src/DartARM32/assembler_arm.h
diff --git a/src/DartARM32/assembler_arm.h b/src/DartARM32/assembler_arm.h
index 2fd5e6e34afea2d6ccb52e2fc917687870803226..62d4d8886bbf195f71b7644bb45edb45e3d1236b 100644
--- a/src/DartARM32/assembler_arm.h
+++ b/src/DartARM32/assembler_arm.h
@@ -595,9 +595,10 @@ class Assembler : public ValueObject {
 
   // Miscellaneous instructions.
   void clrex();
+#if 0
+  // Moved to ARM32::AssemblerARM32::nop().
   void nop(Condition cond = AL);
 
-#if 0
   // Moved to ARM32::AssemblerARM32::bkpt()
   // Note that gdb sets breakpoints using the undefined instruction 0xe7f001f0.
   void bkpt(uint16_t imm16);