[iOS/GN] Update build/config/locales.gni for Chrome on iOS.

build/config/locales.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+# Chrome on iOS only ships with a subset of the locales supported by other
+# version of Chrome as the corresponding locales are not supported by the
+# operating system (but for simplicity, the corresponding .pak files are
+# still generated).
+if (is_ios) {
+  ios_unsupported_locales = [
+    "am",
+    "bg",
+    "bn",
+    "et",
+    "fa",
+    "fil",
+    "gu",
+    "kn",
+    "lt",
+    "lv",
+    "ml",
+    "mr",
+    "sl",
+    "sr",
+    "sw",
+    "ta",
+    "te",
+  ]
+}
+
 # Note: keep in sync with below.
 locales = [
   "am",
   "ar",
   "bg",
   "bn",
   "ca",
   "cs",
   "da",
   "de",
   "el",
   "en-GB",
   "en-US",
-  "es-419",
   "es",
   "et",
   "fa",
   "fi",
   "fil",
   "fr",
   "gu",
   "he",
   "hi",
   "hr",
   "hu",
   "id",
   "it",
   "ja",
   "kn",
   "ko",
   "lt",
   "lv",
   "ml",
   "mr",
   "ms",
   "nb",
   "nl",
   "pl",
-  "pt-BR",
   "pt-PT",
   "ro",
   "ru",
   "sk",
   "sl",
   "sr",
   "sv",
   "sw",
   "ta",
   "te",
   "th",
   "tr",
   "uk",
   "vi",
   "zh-CN",
   "zh-TW",
 ]
 
+# Chrome on iOS uses different names for "es-419" and "pt-BR" (called
+# respectively "es-MX" and "pt" on iOS).
+if (!is_ios) {
+  locales += [
+    "es-419",
+    "pt-BR",
+  ]
+} else {
+  locales += [
+    "es-MX",
+    "pt",
+  ]
+
+  ios_packed_locales = locales - ios_unsupported_locales
+}
+
 # Same as the locales list but in the format Mac expects for output files:
 # it uses underscores instead of hyphens, and "en" instead of "en-US".
 locales_as_mac_outputs = [
   "am",
   "ar",
   "bg",
   "bn",
   "ca",
   "cs",
   "da",
   "de",
   "el",
   "en_GB",
   "en",
-  "es_419",
   "es",
   "et",
   "fa",
   "fi",
   "fil",
   "fr",
   "gu",
   "he",
   "hi",
   "hr",
   "hu",
   "id",
   "it",
   "ja",
   "kn",
   "ko",
   "lt",
   "lv",
   "ml",
   "mr",
   "ms",
   "nb",
   "nl",
   "pl",
-  "pt_BR",
   "pt_PT",
   "ro",
   "ru",
   "sk",
   "sl",
   "sr",
   "sv",
   "sw",
   "ta",
   "te",
   "th",
   "tr",
   "uk",
   "vi",
   "zh_CN",
   "zh_TW",
 ]
+
+# Chrome on iOS uses different names for "es-419" and "pt-BR" (called
+# respectively "es-MX" and "pt" on iOS).
+if (!is_ios) {
+  locales_as_mac_outputs += [
+    "es_419",
+    "pt_BR",
+  ]
+} else {
+  locales_as_mac_outputs += [
+    "es_MX",
+    "pt",
+  ]
+
+  ios_packed_locales_as_mac_outputs =
+      locales_as_mac_outputs - ios_unsupported_locales
+}