Make some foo.h headers usable without foo-inl.h header.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 1233 matching lines @@
 
   // Helper for SetProperty and SetSuperProperty.
   MUST_USE_RESULT static MaybeHandle<Object> SetPropertyInternal(
       LookupIterator* it, Handle<Object> value, LanguageMode language_mode,
       StoreFromKeyed store_mode, bool* found);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Object);
 };
 
 
+// In objects.h to be usable without objects-inl.h inclusion.
+bool Object::IsSmi() const { return HAS_SMI_TAG(this); }
+bool Object::IsHeapObject() const { return Internals::HasHeapObjectTag(this); }
+
+
 struct Brief {
   explicit Brief(const Object* const v) : value(v) {}
   const Object* value;
 };
 
 
 std::ostream& operator<<(std::ostream& os, const Brief& v);
 
 
 // Smi represents integer Numbers that can be stored in 31 bits.
@@ skipping 8976 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_