rebaseline_server: apply ignored-tests.txt within rebaseline_server, not just on the bots

gm/rebaseline_server/results.py

 #!/usr/bin/python
 
 """
 Copyright 2013 Google Inc.
 
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 
 Repackage expected/actual GM results as needed by our HTML rebaseline viewer.
 """
@@ skipping 228 matching lines @@
     meta_dict = {}
     for abs_dirpath, dirnames, filenames in os.walk(root):
       rel_dirpath = os.path.relpath(abs_dirpath, root)
       for matching_filename in fnmatch.filter(filenames, pattern):
         abs_path = os.path.join(abs_dirpath, matching_filename)
         rel_path = os.path.join(rel_dirpath, matching_filename)
         meta_dict[rel_path] = gm_json.LoadFromFile(abs_path)
     return meta_dict
 
   @staticmethod
+  def _read_noncomment_lines(path):
+    """Return a list of all noncomment lines within a file.
+
+    (A "noncomment" line is one that does not start with a '#'.)
+
+    Args:
+      path: path to file
+    """
+    lines = []
+    with open(path, 'r') as fh:
+      for line in fh:
+        if not line.startswith('#'):
+          lines.append(line.strip())
+    return lines
+
+  @staticmethod
   def _create_relative_url(hashtype_and_digest, test_name):
     """Returns the URL for this image, relative to GM_ACTUALS_ROOT_HTTP_URL.
 
     If we don't have a record of this image, returns None.
 
     Args:
       hashtype_and_digest: (hash_type, hash_digest) tuple, or None if we
           don't have a record of this image
       test_name: string; name of the GM test that created this image
     """
@@ skipping 36 matching lines @@
 
   @staticmethod
   def get_multilevel(input_dict, *keys):
     """ Returns input_dict[key1][key2][...], or None if any key is not found.
     """
     for key in keys:
       if input_dict == None:
         return None
       input_dict = input_dict.get(key, None)
     return input_dict