[build] Use icu data file by default

BUG=chromium:616033
LOG=y

Review-Url: https://codereview.chromium.org/2049743002
Cr-Commit-Position: refs/heads/master@{#36862}

gypfiles/isolate.gypi

@@ -73,7 +73,7 @@
         '--config-variable', 'cfi_vptr=<(cfi_vptr)',
         '--config-variable', 'gcmole=<(gcmole)',
         '--config-variable', 'has_valgrind=<(has_valgrind)',
-        '--config-variable', 'icu_use_data_file_flag=0',
+        '--config-variable', 'icu_use_data_file_flag=<(icu_use_data_file_flag)',
         '--config-variable', 'msan=<(msan)',
         '--config-variable', 'tsan=<(tsan)',
         '--config-variable', 'coverage=<(coverage)',

gypfiles/standalone.gypi

@@ -149,6 +149,9 @@
 
       'test_isolation_mode%': 'noop',
 
+      # By default, use ICU data file (icudtl.dat).
+      'icu_use_data_file_flag%': 1,
+
       'conditions': [
         # Set default gomadir.
         ['OS=="win"', {
@@ -197,6 +200,7 @@
     'fastbuild%': '<(fastbuild)',
     'coverage%': '<(coverage)',
     'sysroot%': '<(sysroot)',
+    'icu_use_data_file_flag%': '<(icu_use_data_file_flag)',
 
     # Add a simple extras solely for the purpose of the cctests
     'v8_extra_library_files': ['../test/cctest/test-extra.js'],

src/v8.gyp

@@ -27,7 +27,6 @@
 
 {
   'variables': {
-    'icu_use_data_file_flag%': 0,
     'v8_code': 1,
     'v8_random_seed%': 314159265,
     'v8_vector_stores%': 0,