//tools/binary_size: Add object file count to Print()

tools/binary_size/file_format.py

 # Copyright 2017 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.
 
 """Deals with loading & saving .size files."""
 
 import cStringIO
 import calendar
 import collections
 import datetime
@@ skipping 81 matching lines @@
   """Loads a size_info from the given file."""
   lines = iter(file_obj)
   next(lines)  # Comment line.
   actual_version = next(lines)[:-1]
   assert actual_version == _SERIALIZATION_VERSION, (
       'Version mismatch. Need to write some upgrade code.')
   json_len = int(next(lines))
   json_str = file_obj.read(json_len)
   headers = json.loads(json_str)
   section_sizes = headers['section_sizes']
-  metadata = headers['metadata']
+  metadata = headers.get('metadata')
   lines = iter(file_obj)
   next(lines)  # newline after closing } of json.
 
   num_path_tuples = int(next(lines))
   path_tuples = [None] * num_path_tuples
   for i in xrange(num_path_tuples):
     path_tuples[i] = next(lines)[:-1].split('\t')
 
   section_names = next(lines)[:-1].split('\t')
   section_counts = [int(c) for c in next(lines)[:-1].split('\t')]
@@ skipping 53 matching lines @@
     logging.debug('Serialization complete. Gzipping...')
     stringio.seek(0)
     with gzip.open(path, 'wb') as f:
       shutil.copyfileobj(stringio, f)
 
 
 def LoadSizeInfo(path):
   """Returns a SizeInfo loaded from |path|."""
   with gzip.open(path) as f:
     return _LoadSizeInfoFromFile(f)