[NaCl SDK] update_nacl_manifest: Allow manual updating of a version.

native_client_sdk/src/build_tools/manifest_util.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.
 
 import copy
 import hashlib
 import json
 import string
 import sys
 import urllib2
@@ skipping 525 matching lines @@
           new_bundle.CopyFrom(b)
           bundles.append(new_bundle)
         self._manifest_data[key] = bundles
       else:
         self._manifest_data[key] = value
     self.Validate(add_missing_info)
 
   def __str__(self):
     return self.GetDataAsString()
 
+  def __eq__(self, other):
+    # Access to protected member _manifest_data of a client class
+    # pylint: disable=W0212
+    if (self._manifest_data['manifest_version'] !=
+        other._manifest_data['manifest_version']):
+      return False
+
+    self_bundle_names = set(b.name for b in self.GetBundles())
+    other_bundle_names = set(b.name for b in other.GetBundles())
+    if self_bundle_names != other_bundle_names:
+      return False
+
+    for bundle_name in self_bundle_names:
+      if self.GetBundle(bundle_name) != other.GetBundle(bundle_name):
+        return False
+
+    return True
+
+  def __ne__(self, other):
+    return not (self == other)
+
   def GetDataAsString(self):
     """Returns the current JSON manifest object, pretty-printed"""
     return DictToJSON(self._manifest_data)