[es6] ship Object.assign

BUG=v8:4007
LOG=N
R=rossberg@chromium.org, arv@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1191003003

Cr-Commit-Position: refs/heads/master@{#29118}
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index b47311d..982d3f8 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -202,7 +202,6 @@
   V(harmony_arrow_functions, "harmony arrow functions")        \
   V(harmony_rest_parameters, "harmony rest parameters")        \
   V(harmony_spreadcalls, "harmony spread-calls")               \
-  V(harmony_object, "harmony Object methods")                  \
   V(harmony_spread_arrays, "harmony spread in array literals") \
   V(harmony_tostring, "harmony toString")
 
@@ -212,6 +211,7 @@
   V(harmony_computed_property_names, "harmony computed property names")    \
   V(harmony_object_literals, "harmony object literal extensions")          \
   V(harmony_unicode, "harmony unicode escapes")                            \
+  V(harmony_object, "harmony Object methods")
 
 // Once a shipping feature has proved stable in the wild, it will be dropped
 // from HARMONY_SHIPPING, all occurrences of the FLAG_ variable are removed,
diff --git a/test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt b/test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt
index 1948700..3644697 100644
--- a/test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt
+++ b/test/webkit/fast/js/Object-getOwnPropertyNames-expected.txt
@@ -44,7 +44,7 @@
 PASS getSortedOwnPropertyNames(decodeURIComponent) is ['length', 'name']
 PASS getSortedOwnPropertyNames(encodeURI) is ['length', 'name']
 PASS getSortedOwnPropertyNames(encodeURIComponent) is ['length', 'name']
-PASS getSortedOwnPropertyNames(Object) is ['arguments', 'caller', 'create', 'defineProperties', 'defineProperty', 'deliverChangeRecords', 'freeze', 'getNotifier', 'getOwnPropertyDescriptor', 'getOwnPropertyNames', 'getOwnPropertySymbols', 'getPrototypeOf', 'is', 'isExtensible', 'isFrozen', 'isSealed', 'keys', 'length', 'name', 'observe', 'preventExtensions', 'prototype', 'seal', 'setPrototypeOf', 'unobserve']
+PASS getSortedOwnPropertyNames(Object) is ['arguments', 'assign', 'caller', 'create', 'defineProperties', 'defineProperty', 'deliverChangeRecords', 'freeze', 'getNotifier', 'getOwnPropertyDescriptor', 'getOwnPropertyNames', 'getOwnPropertySymbols', 'getPrototypeOf', 'is', 'isExtensible', 'isFrozen', 'isSealed', 'keys', 'length', 'name', 'observe', 'preventExtensions', 'prototype', 'seal', 'setPrototypeOf', 'unobserve']
 PASS getSortedOwnPropertyNames(Object.prototype) is ['__defineGetter__', '__defineSetter__', '__lookupGetter__', '__lookupSetter__', '__proto__', 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf']
 PASS getSortedOwnPropertyNames(Function) is ['arguments', 'caller', 'length', 'name', 'prototype']
 PASS getSortedOwnPropertyNames(Function.prototype) is ['apply', 'arguments', 'bind', 'call', 'caller', 'constructor', 'length', 'name', 'toString']
diff --git a/test/webkit/fast/js/Object-getOwnPropertyNames.js b/test/webkit/fast/js/Object-getOwnPropertyNames.js
index 20e509b..c7c0bbd 100644
--- a/test/webkit/fast/js/Object-getOwnPropertyNames.js
+++ b/test/webkit/fast/js/Object-getOwnPropertyNames.js
@@ -71,7 +71,7 @@
     "encodeURI": "['length', 'name']",
     "encodeURIComponent": "['length', 'name']",
 // Built-in ECMA objects
-    "Object": "['arguments', 'caller', 'create', 'defineProperties', 'defineProperty', 'deliverChangeRecords', 'freeze', 'getNotifier', 'getOwnPropertyDescriptor', 'getOwnPropertyNames', 'getOwnPropertySymbols', 'getPrototypeOf', 'is', 'isExtensible', 'isFrozen', 'isSealed', 'keys', 'length', 'name', 'observe', 'preventExtensions', 'prototype', 'seal', 'setPrototypeOf', 'unobserve']",
+    "Object": "['arguments', 'assign', 'caller', 'create', 'defineProperties', 'defineProperty', 'deliverChangeRecords', 'freeze', 'getNotifier', 'getOwnPropertyDescriptor', 'getOwnPropertyNames', 'getOwnPropertySymbols', 'getPrototypeOf', 'is', 'isExtensible', 'isFrozen', 'isSealed', 'keys', 'length', 'name', 'observe', 'preventExtensions', 'prototype', 'seal', 'setPrototypeOf', 'unobserve']",
     "Object.prototype": "['__defineGetter__', '__defineSetter__', '__lookupGetter__', '__lookupSetter__', '__proto__', 'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf']",
     "Function": "['arguments', 'caller', 'length', 'name', 'prototype']",
     "Function.prototype": "['apply', 'arguments', 'bind', 'call', 'caller', 'constructor', 'length', 'name', 'toString']",