Use weak cells to embed maps in store handler.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index e45ae5c24c656b86eb785a46f50c82b07689e623..2c798c1749f70cd152c2afddabf09e936e8a5f5a 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -3670,18 +3670,6 @@ void MacroAssembler::CheckPageFlag(
 }
 
 
-void MacroAssembler::CheckMapDeprecated(Handle<Map> map,
-                                        Register scratch,
-                                        Label* if_deprecated) {
-  if (map->CanBeDeprecated()) {
-    mov(scratch, Operand(map));
-    ldr(scratch, FieldMemOperand(scratch, Map::kBitField3Offset));
-    tst(scratch, Operand(Map::Deprecated::kMask));
-    b(ne, if_deprecated);
-  }
-}
-
-
 void MacroAssembler::JumpIfBlack(Register object,
                                  Register scratch0,
                                  Register scratch1,