Implement set trap for proxies, and revamp class hierarchy in preparation

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 885dd5a0c75504159e8074d911c471da3d2fb20e..92a44f3bfadc1cc9ffac66c7ec4b49fab5e52ce7 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -1058,9 +1058,9 @@ void MacroAssembler::IsInstanceJSObjectType(Register map,
                                             Register scratch,
                                             Label* fail) {
   ldrb(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
-  cmp(scratch, Operand(FIRST_JS_OBJECT_TYPE));
+  cmp(scratch, Operand(FIRST_OBJECT_CLASS_TYPE));
   b(lt, fail);
-  cmp(scratch, Operand(LAST_JS_OBJECT_TYPE));
+  cmp(scratch, Operand(LAST_OBJECT_CLASS_TYPE));
   b(gt, fail);
 }