Implement LSR instructions for the integrated ARM 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 a2426c00d15db2d68c5cacf0da624f7a3bf65386..fe7418f7ab2bd5a48a3851394b35f01e1a9114c4 100644
--- a/src/DartARM32/assembler_arm.h
+++ b/src/DartARM32/assembler_arm.h
@@ -964,10 +964,12 @@ class Assembler : public ValueObject {
            Condition cond = AL);
   // Moved to ARM32::AssemblerARM32::lsl()
   void Lsl(Register rd, Register rm, Register rs, Condition cond = AL);
-#endif
+  // Moved to ARM32::AssemblerARM32::lsr()
   void Lsr(Register rd, Register rm, const Operand& shift_imm,
            Condition cond = AL);
+  // Moved to ARM32::AssemblerARM32::lsr()
   void Lsr(Register rd, Register rm, Register rs, Condition cond = AL);
+#endif
   void Asr(Register rd, Register rm, const Operand& shift_imm,
            Condition cond = AL);
   void Asr(Register rd, Register rm, Register rs, Condition cond = AL);