Add support for the 'webview_android' policy configuration

grit/format/policy_templates/writers/template_writer.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 class TemplateWriter(object):
   '''Abstract base class for writing policy templates in various formats.
   The methods of this class will be called by PolicyTemplateGenerator.
   '''
@@ skipping 73 matching lines @@
     return False
 
   def CanBeRecommended(self, policy):
     '''Checks if the given policy can be recommended.'''
     return policy.get('features', {}).get('can_be_recommended', False)
 
   def CanBeMandatory(self, policy):
     '''Checks if the given policy can be mandatory.'''
     return policy.get('features', {}).get('can_be_mandatory', True)
 
-  def IsPolicySupportedOnPlatform(self, policy, platform):
-    '''Checks if |policy| is supported on |platform|.
+  def IsPolicySupportedOnPlatform(self, policy, platform, product=None):
+    '''Checks if |policy| is supported on |product| for |platform|. If not
+    specified, only the platform support is checked.
 
     Args:
       policy: The dictionary of the policy.
       platform: The platform to check; one of 'win', 'mac', 'linux' or
         'chrome_os'.
+      product: Optional product to check; one of 'chrome', 'chrome_frame',
+        'chrome_os', 'webview'
     '''
-    is_supported = lambda x: platform in x['platforms']
+    is_supported = lambda x: (platform in x['platforms'] and
+                             (not product or product in x['product']))
+
     return any(filter(is_supported, policy['supported_on']))
 
   def _GetChromiumVersionString(self):
     '''Returns the Chromium version string stored in the environment variable
     version (if it is set).
 
     Returns: The Chromium version string or None if it has not been set.'''
 
     if 'version' in self.config:
       return self.config['version']
@@ skipping 196 matching lines @@
     '''
     is_group = policy['type'] == 'group'
     if is_group:
       # Groups are sorted by caption.
       str_key = policy['caption']
     else:
       # Regular policies are sorted by name.
       str_key = policy['name']
     # Groups come before regular policies.
     return (not is_group, str_key)