Revert "Reland "Enable Object.observe by default""

This reverts commit r19736 for breaking browser_tests on ChromiumOS.

TBR=rossberg@chromium.org,rafaelw@chromium.org

Review URL: https://codereview.chromium.org/195603002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19819 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt

@@ -63,11 +63,11 @@ FAIL getSortedOwnPropertyNames(decodeURI) should be length,name. Was arguments,c
 FAIL getSortedOwnPropertyNames(decodeURIComponent) should be length,name. Was arguments,caller,length,name.
 FAIL getSortedOwnPropertyNames(encodeURI) should be length,name. Was arguments,caller,length,name.
 FAIL getSortedOwnPropertyNames(encodeURIComponent) should be length,name. Was arguments,caller,length,name.
-FAIL getSortedOwnPropertyNames(Object) should be create,defineProperties,defineProperty,freeze,getOwnPropertyDescriptor,getOwnPropertyNames,getPrototypeOf,isExtensible,isFrozen,isSealed,keys,length,name,preventExtensions,prototype,seal,setPrototypeOf. Was arguments,caller,create,defineProperties,defineProperty,deliverChangeRecords,freeze,getNotifier,getOwnPropertyDescriptor,getOwnPropertyNames,getPrototypeOf,is,isExtensible,isFrozen,isSealed,keys,length,name,observe,preventExtensions,prototype,seal,setPrototypeOf,unobserve.
+FAIL getSortedOwnPropertyNames(Object) should be create,defineProperties,defineProperty,freeze,getOwnPropertyDescriptor,getOwnPropertyNames,getPrototypeOf,isExtensible,isFrozen,isSealed,keys,length,name,preventExtensions,prototype,seal,setPrototypeOf. Was arguments,caller,create,defineProperties,defineProperty,freeze,getOwnPropertyDescriptor,getOwnPropertyNames,getPrototypeOf,is,isExtensible,isFrozen,isSealed,keys,length,name,preventExtensions,prototype,seal,setPrototypeOf.
 PASS getSortedOwnPropertyNames(Object.prototype) is ['__defineGetter__', '__defineSetter__', '__lookupGetter__', '__lookupSetter__', '__proto__', 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf']
 FAIL getSortedOwnPropertyNames(Function) should be length,name,prototype. Was arguments,caller,length,name,prototype.
 FAIL getSortedOwnPropertyNames(Function.prototype) should be apply,bind,call,constructor,length,name,toString. Was apply,arguments,bind,call,caller,constructor,length,name,toString.
-FAIL getSortedOwnPropertyNames(Array) should be isArray,length,name,prototype. Was arguments,caller,isArray,length,name,observe,prototype,unobserve.
+FAIL getSortedOwnPropertyNames(Array) should be isArray,length,name,prototype. Was arguments,caller,isArray,length,name,prototype.
 PASS getSortedOwnPropertyNames(Array.prototype) is ['concat', 'constructor', 'every', 'filter', 'forEach', 'indexOf', 'join', 'lastIndexOf', 'length', 'map', 'pop', 'push', 'reduce', 'reduceRight', 'reverse', 'shift', 'slice', 'some', 'sort', 'splice', 'toLocaleString', 'toString', 'unshift']
 FAIL getSortedOwnPropertyNames(String) should be fromCharCode,length,name,prototype. Was arguments,caller,fromCharCode,length,name,prototype.
 PASS getSortedOwnPropertyNames(String.prototype) is ['anchor', 'big', 'blink', 'bold', 'charAt', 'charCodeAt', 'concat', 'constructor', 'fixed', 'fontcolor', 'fontsize', 'indexOf', 'italics', 'lastIndexOf', 'length', 'link', 'localeCompare', 'match', 'normalize', 'replace', 'search', 'slice', 'small', 'split', 'strike', 'sub', 'substr', 'substring', 'sup', 'toLocaleLowerCase', 'toLocaleUpperCase', 'toLowerCase', 'toString', 'toUpperCase', 'trim', 'trimLeft', 'trimRight', 'valueOf']