Revert of Revert of Turn on icu_use_data_file_flag on CrOS

build/common.gypi

 # Copyright (c) 2012 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 1314 matching lines @@
           }],
           # All Chrome builds have breakpad symbols, but only process the
           # symbols from official builds.
           ['(branding=="Chrome" and buildtype=="Official")', {
             'linux_dump_symbols%': 1,
 
             # Omit unwind support in official release builds to save space. We
             # can use breakpad for these builds.
             'release_unwind_tables%': 0,
           }],
-          # TODO(jungshik): Turn this on on Android and Chrome OS
-          ['OS!="android" and chromeos==0', {
+          # TODO(jungshik): Turn this on on Android.
+          # For ChromeOS, this should be turned on in chromeos-chrome.ebuild
+          # file as well by adding icu_use_data_file_flag=1 to BUILD_DEFINES.
+          ['OS!="android"', {
             'icu_use_data_file_flag%': 1,
           }],
         ],
       }],  # os_posix==1 and OS!="mac" and OS!="ios"
       ['OS=="mac"', {
         'icu_use_data_file_flag%': 1,
       }],  # os=="mac"
       ['OS=="ios"', {
         'disable_nacl%': 1,
         'enable_background%': 0,
@@ skipping 3624 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }