Chrome version info getter for Chrome OS.

chrome/chrome_common.gypi

Index: chrome/chrome_common.gypi
===================================================================
--- chrome/chrome_common.gypi	(revision 113742)
+++ chrome/chrome_common.gypi	(working copy)
@@ -81,6 +81,7 @@
         'common/chrome_sandbox_type_mac.h',
         'common/chrome_utility_messages.h',
         'common/chrome_version_info.cc',
+        'common/chrome_version_info_chromeos.cc',
         'common/chrome_version_info_linux.cc',
         'common/chrome_version_info_mac.mm',
         'common/chrome_version_info_win.cc',
@@ -281,6 +282,15 @@
             '../build/linux/system.gyp:selinux',
           ],
         }],
+        ['chromeos==0', {
+          'sources!': [
+            'common/chrome_version_info_chromeos.cc',
+          ],
+        }, {
+          'sources!': [
+            'common/chrome_version_info_linux.cc',
+          ],
+        }],
         ['OS=="mac"', {
           'dependencies': [
             '../third_party/mach_override/mach_override.gyp:mach_override',