[iOS] Pack ios_strings_resources_${locale}.pak files

Add ios/chrome/ios_strings_resources_${locale}.pak files to the
repack_locales.py script and "packed_resources" target.

BUG=475514

Review URL: https://codereview.chromium.org/1111823002

Cr-Commit-Position: refs/heads/master@{#327524}

chrome/chrome_resources.gyp

@@ -446,13 +446,12 @@
             '<(DEPTH)/third_party/WebKit/public/blink_resources.gyp:blink_resources',
           ],
         }, {  # else
+          'dependencies': [
+            '<(DEPTH)/ios/chrome/ios_chrome_resources.gyp:ios_strings_resources_gen',
+          ],
           'actions': [
             {
-              'conditions': [
-                ['OS == "ios"', {
-                  'includes': ['chrome_repack_chrome_300_percent.gypi']
-                }],
-              ],
+              'includes': ['chrome_repack_chrome_300_percent.gypi']
             },
           ],
         }],

chrome/tools/build/repack_locales.py

@@ -108,6 +108,11 @@ def calc_inputs(locale):
     inputs.append(os.path.join(SHARE_INT_DIR, 'ui', 'strings',
                   'app_locale_settings_%s.pak' % locale))
 
+  else:
+    #e.g. '<(SHARED_INTERMEDIATE_DIR)/ios/chrome/ios_strings_resources_da.pak'
+    inputs.append(os.path.join(SHARE_INT_DIR, 'ios', 'chrome',
+                  'ios_strings_resources_%s.pak' % locale))
+
   if ENABLE_AUTOFILL_DIALOG:
     #e.g. '<(SHARED_INTERMEDIATE_DIR)/third_party/libaddressinput/
     # address_input_strings_da.pak',