commit 4879041447c3210672c772ac1874fae71fdbda0d
author sbc <sbc@chromium.org> Wed Jul 01 14:57:15 2015 -0700
committer Commit bot <commit-bot@chromium.org> Wed Jul 01 21:57:53 2015 +0000
tree 1088e7098862bbf31c97cfef8c03a716bfa2c132
parent 424ca04aa1041c9e280056dbe9b03685ab954b02

Remove old/unused atomicops code

None of these gcc versions of atomicopts are used in
chromium anymore.  The portable versions were added in:
https://codereview.chromium.org/636783002 and all our
GCC-based targets use those now.

This change mostly just removes dead code.

Some files were added to base/allocator/BUILD.gn in order
to have it match allocator.gyp.   These were not required
before but are now (specifically tcmalloc's
base/atomicops-internals-x86.cc).  We got away without it
previously since base/atomicops_internals_x86_gcc.cc
provided the same symbol, but the symbol collision was
arguably a bug.

BUG=423074

Review URL: https://codereview.chromium.org/1211903003

Cr-Original-Commit-Position: refs/heads/master@{#337123}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b030801fcf447602931b3e4b8f94aae8053c61fb