Add a separate icu data file for ChromeOS

third_party/icu/icu.gyp

Index: third_party/icu/icu.gyp
===================================================================
--- third_party/icu/icu.gyp	(revision 43139)
+++ third_party/icu/icu.gyp	(working copy)
@@ -28,8 +28,12 @@
          # version is an identical copy of the (mac) icudt42l_dat.s file,
          # modulo removal of the .private_extern and .const directives and
          # with no leading underscore on the icudt42_dat symbol.
+	 # The ChromiumOS version is slightly smaller because it doesn't
+	 # have locale data for locales Chrome is localized to but ChromeOS
+	 # is not localized to.
         'linux/icudt42l_dat.s',
         'mac/icudt42l_dat.s',
+        'cros/icudt42l_dat.s',
       ],
       'conditions': [
         [ 'OS == "win"', {
@@ -38,12 +42,15 @@
         }, {  # else: OS != "win"
           'sources!': ['icudt42.dll'],
         }],
-        [ 'OS != "linux"', {
+        [ 'OS != "linux" or chromeos == 1', {
           'sources!': ['linux/icudt42l_dat.s'],
         }],
         [ 'OS != "mac"', {
           'sources!': ['mac/icudt42l_dat.s'],
         }],
+        [ 'chromeos != 1', {
+          'sources!': ['cros/icudt42l_dat.s'],
+        }],
       ],
     },
     {