Base: Switch base_i18n to be a separate dll (component build)

base/base.gyp

 # Copyright (c) 2011 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     'base.gypi',
   ],
   'targets': [
     {
       'target_name': 'base_i18n',
-      'type': 'static_library',
+      'type': '<(component)',
       'dependencies': [
         'base',
+        'third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
       ],
       'conditions': [
         ['toolkit_uses_gtk==1', {
           'dependencies': [
             # i18n/rtl.cc uses gtk
             '../build/linux/system.gyp:gtk',
           ],
         }],
       ],
       'export_dependent_settings': [
         'base',
       ],
+      'defines': [
+        'BASE_I18N_IMPLEMENTATION',
+      ],
       'sources': [
+        'i18n/base_i18n_export.h',
         'i18n/bidi_line_iterator.cc',
         'i18n/bidi_line_iterator.h',
         'i18n/break_iterator.cc',
         'i18n/break_iterator.h',
         'i18n/char_iterator.cc',
         'i18n/char_iterator.h',
         'i18n/case_conversion.cc',
         'i18n/case_conversion.h',
         'i18n/file_util_icu.cc',
         'i18n/file_util_icu.h',
@@ skipping 350 matching lines @@
           'msvs_settings': {
             'VCLinkerTool': {
               'SubSystem': '2',         # Set /SUBSYSTEM:WINDOWS
             },
           },
         },
       ],
     }],
   ],
 }