Include icu.isolate instead of listing icudt.dll

icu.isolate file added in https://codereview.chromium.org/99073008/
is used where icudt.dll is directly listed for
'isolate_dependency_tracked'.

icu.isolate includes either icudtl.dat or icudt.dll depending on
'OS' and 'icu_use_data_file_flag'.

Besides, 'icu_use_data_file_flag' is added to build/isolate.gypi as a
config-variable.

Once the above icu-side CL is checked in, this CL will also includes
icu DEPS roll.

This is a prerequisite for the following CLs to use icudtl.dat :

Windows : https://codereview.chromium.org/99473012
Linux : https://codereview.chromium.org/102413007
Mac : https://codereview.chromium.org/109013004

BUG=72633
TEST=All tests utilizing isolate pass on bots.

Review URL: https://codereview.chromium.org/124143002

git-svn-id: http://src.chromium.org/svn/trunk/src/build@245136 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

android/pylib/gtest/setup.py

@@ -108,6 +108,8 @@ def _GenerateDepsDirUsingIsolate(suite_name):
   isolated_abs_path = os.path.join(
       constants.GetOutDirectory(), '%s.isolated' % suite_name)
   assert os.path.exists(isolate_abs_path)
+  # This needs to be kept in sync with the cmd line options for isolate.py
+  # in src/build/isolate.gypi.
   isolate_cmd = [
       'python', _ISOLATE_SCRIPT,
       'remap',
@@ -115,6 +117,7 @@ def _GenerateDepsDirUsingIsolate(suite_name):
       '--isolated', isolated_abs_path,
       '--path-variable', 'PRODUCT_DIR', constants.GetOutDirectory(),
       '--config-variable', 'OS', 'android',
+      '--config-variable', 'icu_use_data_file_flag', '0',
       '--outdir', constants.ISOLATE_DEPS_DIR,
   ]
   assert not cmd_helper.RunCmd(isolate_cmd)

isolate.gypi

@@ -68,12 +68,15 @@
         '<(test_isolation_mode)',
         # Variables should use the -V FOO=<(FOO) form so frequent values,
         # like '0' or '1', aren't stripped out by GYP.
+	# This list needs to be kept in sync with the cmd line options
+	# in src/build/android/pylib/gtest/setup.py.
         '--path-variable', 'PRODUCT_DIR', '<(PRODUCT_DIR) ',
         '--config-variable', 'OS=<(OS)',
         # TODO(kbr): move this to chrome_tests.gypi:gles2_conform_tests_run
         # once support for user-defined config variables is added.
         '--config-variable',
         'internal_gles2_conform_tests=<(internal_gles2_conform_tests)',
+        '--config-variable', 'icu_use_data_file_flag=<(icu_use_data_file_flag)',
         '--result', '<@(_outputs)',
         '--isolate', '<(RULE_INPUT_PATH)',
       ],