Ship String.prototype.trim{Start,End}

Intent to ship:
https://groups.google.com/d/msg/v8-users/f6t2VJha_3o/fzJjpahaCgAJ

Bug: v8:6530
Change-Id: I380ac947df9fe6ca7deb3315540388fc923810ea
Reviewed-on: https://chromium-review.googlesource.com/912869Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51251}

src/flag-definitions.h

@@ -204,14 +204,13 @@ DEFINE_IMPLICATION(harmony_class_fields, harmony_static_fields)
 DEFINE_IMPLICATION(harmony_class_fields, harmony_private_fields)
 
 // Features that are still work in progress (behind individual flags).
-#define HARMONY_INPROGRESS(V)                                            \
-  V(harmony_string_trimming, "harmony String.prototype.trim{Start,End}") \
-  V(harmony_array_prototype_values, "harmony Array.prototype.values")    \
-  V(harmony_function_sent, "harmony function.sent")                      \
-  V(harmony_do_expressions, "harmony do-expressions")                    \
-  V(harmony_class_fields, "harmony fields in class literals")            \
-  V(harmony_static_fields, "harmony static fields in class literals")    \
-  V(harmony_bigint, "harmony arbitrary precision integers")              \
+#define HARMONY_INPROGRESS(V)                                         \
+  V(harmony_array_prototype_values, "harmony Array.prototype.values") \
+  V(harmony_function_sent, "harmony function.sent")                   \
+  V(harmony_do_expressions, "harmony do-expressions")                 \
+  V(harmony_class_fields, "harmony fields in class literals")         \
+  V(harmony_static_fields, "harmony static fields in class literals") \
+  V(harmony_bigint, "harmony arbitrary precision integers")           \
   V(harmony_private_fields, "harmony private fields in class literals")
 
 // Features that are complete (but still behind --harmony/es-staging flag).
@@ -223,6 +222,7 @@ DEFINE_IMPLICATION(harmony_class_fields, harmony_private_fields)
 
 // Features that are shipping (turned on by default, but internal flag remains).
 #define HARMONY_SHIPPING_BASE(V)                                              \
+  V(harmony_string_trimming, "harmony String.prototype.trim{Start,End}")      \
   V(harmony_sharedarraybuffer, "harmony sharedarraybuffer")                   \
   V(harmony_regexp_named_captures, "harmony regexp named captures")           \
   V(harmony_regexp_property, "harmony Unicode regexp property classes")       \