The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/428f805f67405aafe534c68861daebea9230aeff

commit 428f805f67405aafe534c68861daebea9230aeff
Author: Peter Wen <wnwen@chromium.org>
Date: Mon May 28 19:19:46 2018

Supersize: Add aliases for pak symbols

When different .cc files use the same pak symbol, we want to attribute
size correctly to all usages.

Also rename overhead for each pak file to the proper overhead format.

Add tests for associating pak files with the right object paths.

Bug:  846304 
Change-Id: I07be2f53ad75e90dc3623c182b4929e17c18a0f8
Reviewed-on: https://chromium-review.googlesource.com/1075289
Commit-Queue: Peter Wen <wnwen@chromium.org>
Reviewed-by: Eric Stevenson <estevenson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#562298}
[modify] https://crrev.com/428f805f67405aafe534c68861daebea9230aeff/tools/binary_size/libsupersize/archive.py
[modify] https://crrev.com/428f805f67405aafe534c68861daebea9230aeff/tools/binary_size/libsupersize/testdata/Archive_Apk.golden
[modify] https://crrev.com/428f805f67405aafe534c68861daebea9230aeff/tools/binary_size/libsupersize/testdata/Archive_Pak_Files.golden
[add] https://crrev.com/428f805f67405aafe534c68861daebea9230aeff/tools/binary_size/libsupersize/testdata/mock_output_directory/obj/base/base/page_allocator.o.whitelist
[add] https://crrev.com/428f805f67405aafe534c68861daebea9230aeff/tools/binary_size/libsupersize/testdata/mock_output_directory/obj/third_party/icu/icuuc/ucnv_ext.o.whitelist