Add ASR 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 fe7418f7ab2bd5a48a3851394b35f01e1a9114c4..2fd5e6e34afea2d6ccb52e2fc917687870803226 100644
--- a/src/DartARM32/assembler_arm.h
+++ b/src/DartARM32/assembler_arm.h
@@ -969,10 +969,12 @@ class Assembler : public ValueObject {
            Condition cond = AL);
   // Moved to ARM32::AssemblerARM32::lsr()
   void Lsr(Register rd, Register rm, Register rs, Condition cond = AL);
-#endif
+  // Moved to ARM32::AssemblerARM32::asr()
   void Asr(Register rd, Register rm, const Operand& shift_imm,
            Condition cond = AL);
+  // Moved to ARM32::AssemblerARM32::asr()
   void Asr(Register rd, Register rm, Register rs, Condition cond = AL);
+#endif
   void Asrs(Register rd, Register rm, const Operand& shift_imm,
             Condition cond = AL);
   void Ror(Register rd, Register rm, const Operand& shift_imm,