//tools/binary_size: Fix source paths for linux builds

tools/binary_size/libsupersize/archive.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.
 
 """Main Python API for analyzing binary size."""
 
 import argparse
 import calendar
 import collections
 import datetime
@@ skipping 117 matching lines @@
     # Convert ../../third_party/... -> third_party/...
     return path[6:]
   return path
 
 
 def _ExtractSourcePaths(symbols, output_directory):
   """Fills in the .source_path attribute of all symbols.
 
   Returns True if source paths were found.
   """
-  all_found = True
   mapper = ninja_parser.SourceFileMapper(output_directory)
+  not_found_paths = set()
 
   for symbol in symbols:
     object_path = symbol.object_path
     if symbol.source_path or not object_path:
       continue
     # We don't have source info for prebuilt .a files.
-    if not object_path.startswith('..'):
+    if not os.path.isabs(object_path) and not object_path.startswith('..'):
       source_path = mapper.FindSourceForPath(object_path)
       if source_path:
         symbol.source_path = _NormalizeSourcePath(source_path)
-      else:
-        all_found = False
+      elif object_path not in not_found_paths:
+        not_found_paths.add(object_path)
         logging.warning('Could not find source path for %s', object_path)
   logging.debug('Parsed %d .ninja files.', mapper.GetParsedFileCount())
-  return all_found
+  return len(not_found_paths) == 0
 
 
 def _CalculatePadding(symbols):
   """Populates the |padding| field based on symbol addresses.
 
   Symbols must already be sorted by |address|.
   """
   seen_sections = []
   for i, symbol in enumerate(symbols[1:]):
     prev_symbol = symbols[i]
@@ skipping 302 matching lines @@
                                              lazy_paths.tool_prefix)
     for k, v in elf_section_sizes.iteritems():
       assert v == size_info.section_sizes.get(k), (
           'ELF file and .map file do not match.')
 
   logging.info('Recording metadata: \n  %s',
                '\n  '.join(describe.DescribeMetadata(size_info.metadata)))
   logging.info('Saving result to %s', args.size_file)
   file_format.SaveSizeInfo(size_info, args.size_file)
   logging.info('Done')