Change the platform app manifest structure.

chrome/common/extensions/docs/build/directory.py

 # 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 for parsing metadata about extension samples."""
 
 import locale
 import os
 import os.path
 import re
@@ skipping 731 matching lines @@
   def _uses_popup(self):
     """ Returns true if the extension defines a popup on a page or browser
     action. """
     has_b_popup = (self._uses_browser_action() and
                    self._manifest['browser_action'].has_key('popup'))
     has_p_popup = (self._uses_page_action() and
                    self._manifest['page_action'].has_key('popup'))
     return has_b_popup or has_p_popup
 
   def is_hosted_app(self):
-    """ Returns true if the manifest has an app but not a local_path."""
+    """ Returns true if the manifest has an app but not a local_path (that's a
+    packaged app) nor a background (that's a platform app)."""
     return (self._manifest.has_key('app') and
             (not self._manifest['app'].has_key('launch') or
-             not self._manifest['app']['launch'].has_key('local_path')))
+             not self._manifest['app']['launch'].has_key('local_path')) and
+            not self._manifest['app'].has_key('background'))
 
   def is_packaged_app(self):
     """ Returns true if the manifest has an app/launch/local_path section."""
     return (self._manifest.has_key('app') and
             self._manifest['app'].has_key('launch') and
             self._manifest['app']['launch'].has_key('local_path'))
 
   def write_zip(self):
     """ Writes a zip file containing all of the files in this Sample's dir."""
     sample_path = os.path.realpath(os.path.dirname(self._manifest_path))
@@ skipping 42 matching lines @@
           zip_file.write(abspath, relpath)
           if file == 'manifest.json':
             info = zip_file.getinfo(zip_manifest_path)
             info.comment = self['source_hash']
     except RuntimeError, msg:
       raise Exception("Could not write zip at %s: %s" % (zip_path, msg))
     finally:
       zip_file.close()
 
     return self._get_relative_zip_path()