Add support for DateTimeFormat.formatToParts

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index 7c97a470d4c17c50e08f799afc3b50b817878c56..977b715b917469a996301a4cfde357e8b077c224 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -180,9 +180,11 @@ DEFINE_BOOL(harmony, false, "enable all completed harmony features")
 DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
 DEFINE_IMPLICATION(es_staging, harmony)
 
+#ifdef V8_I18N_SUPPORT
 DEFINE_BOOL(intl_extra, false, "additional V8 Intl functions")
 // Removing extra Intl functions is shipped
 DEFINE_NEG_VALUE_IMPLICATION(harmony_shipping, intl_extra, true)
+#endif
 
 // Activate on ClusterFuzz.
 DEFINE_IMPLICATION(es_staging, harmony_regexp_lookbehind)
@@ -212,8 +214,9 @@ DEFINE_IMPLICATION(es_staging, move_object_start)
   V(harmony_string_padding, "harmony String-padding methods")
 
 #ifdef V8_I18N_SUPPORT
-#define HARMONY_STAGED(V) \
-  HARMONY_STAGED_BASE(V)  \
+#define HARMONY_STAGED(V)                                          \
+  HARMONY_STAGED_BASE(V)                                           \
+  V(datetime_format_to_parts, "Intl.DateTimeFormat.formatToParts") \

[Dan Ehrenberg, 2016/09/06 19:39:29]

Please check this in initially as INPROGRESS; I was just suggesting staging
*locally* to see how the tests do.

[jungshik at Google, 2016/09/06 21:35:14]

Well, for local testing, I don't need it either because I can just pass
--extra-flags=--datetime-format-to-parts to run_test.py script. 

However, it's useful to run tests on trybots. Anyway, I'm moving it back to
progress bucket. 

   V(icu_case_mapping, "case mapping with ICU rather than Unibrow")
 #else
 #define HARMONY_STAGED(V) HARMONY_STAGED_BASE(V)