Add CLZ instruction to 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 00982b127ce912ab32efcee5f86ed9ec0dfc085a..119225a53422f4079171e1f0fe8023b91df43541 100644
--- a/src/DartARM32/assembler_arm.h
+++ b/src/DartARM32/assembler_arm.h
@@ -513,13 +513,13 @@ class Assembler : public ValueObject {
   // Moved to ARM32::IceAssemblerARM32::mvn()
   void mvn(Register rd, Operand o, Condition cond = AL);
   void mvns(Register rd, Operand o, Condition cond = AL);
-#endif
 
   // Miscellaneous data-processing instructions.
+  // Moved to ARM32::AssemblerARM32::clz()
   void clz(Register rd, Register rm, Condition cond = AL);
 
   // Multiply instructions.
-#if 0
+
   // Moved to ARM32::AssemblerARM32::mul()
   void mul(Register rd, Register rn, Register rm, Condition cond = AL);
   void muls(Register rd, Register rn, Register rm, Condition cond = AL);