Update plugins_check to run on ChromeOS

chrome/test/data/chromeos_plugins_list.txt

+# List of ChromeOS Chrome plugins to verify plugins' version and state.
+# To add new plugin, add new plugin with following version in the list,
+# {u'name':'<Plugin Name>', u'enabled':<True/False>, u'version':u'<VERSION>'}
+# Used by: chrome/test/functional/plugins_check.py
+# Note: By default the script will use the key named 'name' as the unique
+#       identifier.  If you want to override you can use the unique_key key
+[
+ {u'unique_key':'path', u'name':u'Shockwave Flash', u'path':'/opt/google/chrome/pepper/libpepflashplayer.so', u'enabled':1, u'version':u'10.2.158.7'}, 
+ {u'unique_key':'path', u'name':u'Shockwave Flash', u'path':'/opt/google/chrome/plugins/libgcflashplayer.so', u'enabled':1, u'version':u'10.2 r154'},
+ {u'name':'Chrome PDF Viewer', u'enabled':1, u'version':u''},
+ {u'name':'Netflix', u'enabled':1, u'version':u'0.1.1'},
+ {u'name':'Google Talk Plugin', u'enabled':1, u'version':u''},
+ {u'name':'O3D Plugin', u'enabled':1, u'version':u''},
+ {u'name':'Default Plug-in', u'enabled':1, u'version':u'1'},
+]