Revert "Remove all safesync_url functionality from gclient"

recipe_modules/gclient/api.py

 # Copyright 2013 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.
 
 from recipe_engine import recipe_api
 
 
 class RevisionResolver(object):
   """Resolves the revision based on build properties."""
 
@@ skipping 115 matching lines @@
 
   def resolve_revision(self, revision):
     if hasattr(revision, 'resolve'):
       return revision.resolve(self.m.properties)
     return revision
 
   def sync(self, cfg, with_branch_heads=False, **kwargs):
     revisions = []
     self.set_patch_project_revision(self.m.properties.get('patch_project'), cfg)
     for i, s in enumerate(cfg.solutions):
+      if s.safesync_url:  # prefer safesync_url in gclient mode
+        continue
       if i == 0 and s.revision is None:
         s.revision = RevisionFallbackChain()
 
       if s.revision is not None and s.revision != '':
         fixed_revision = self.resolve_revision(s.revision)
         if fixed_revision:
           revisions.extend(['--revision', '%s@%s' % (s.name, fixed_revision)])
 
     for name, revision in sorted(cfg.revisions.items()):
       fixed_revision = self.resolve_revision(revision)
@@ skipping 205 matching lines @@
     """Updates config revision corresponding to patch_project.
 
     Useful for bot_update only, as this is the only consumer of gclient's config
     revision map. This doesn't overwrite the revision if it was already set.
     """
     assert patch_project is None or isinstance(patch_project, basestring)
     cfg = gclient_config or self.c
     path, revision = cfg.patch_projects.get(patch_project, (None, None))
     if path and revision and path not in cfg.revisions:
       cfg.revisions[path] = revision