Richard's change was LLVM r268594, which is in the bot regression window of 268523-268598.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4fbaaecb9433f9503946be68d0ecef63a1b4a164

commit 4fbaaecb9433f9503946be68d0ecef63a1b4a164
Author: rnk <rnk@chromium.org>
Date: Thu May 05 21:57:09 2016

Fix invalid using decl in bionic relocation_packer

The code was essentially doing 'using Logger::INFO' in the global
namespace to make its 'LOG(INFO)' macros work. Unfortunately, C++ does
not allow you to use using decls on classes like this unless you are in
a derived class. GCC does not accept this code, and Clang was recently
updated (LLVM r268594) to reject it as well.

This should fix the Chromium Android ASan build with TOT Clang:
https://build.chromium.org/p/chromium.fyi/builders/ClangToTAndroidASan/

I'll send this patch along to AOSP after fixing it here.

R=thakis@chromium.org,sgurun@chromium.org
BUG= 609543 

Review-Url: https://codereview.chromium.org/1953863002
Cr-Commit-Position: refs/heads/master@{#391920}

[modify] https://crrev.com/4fbaaecb9433f9503946be68d0ecef63a1b4a164/third_party/android_platform/README.chromium
[modify] https://crrev.com/4fbaaecb9433f9503946be68d0ecef63a1b4a164/third_party/android_platform/bionic/tools/relocation_packer/src/debug.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0e51f7ced0481ce1d31933c64519d0842a52b5c9

commit 0e51f7ced0481ce1d31933c64519d0842a52b5c9
Author: rnk <rnk@chromium.org>
Date: Thu May 05 22:18:55 2016

Revert of Fix invalid using decl in bionic relocation_packer (patchset #1 id:1 of https://codereview.chromium.org/1953863002/ )

Reason for revert:
Broke Android builds due to missing namespace qualifier

Original issue's description:
> Fix invalid using decl in bionic relocation_packer
>
> The code was essentially doing 'using Logger::INFO' in the global
> namespace to make its 'LOG(INFO)' macros work. Unfortunately, C++ does
> not allow you to use using decls on classes like this unless you are in
> a derived class. GCC does not accept this code, and Clang was recently
> updated (LLVM r268594) to reject it as well.
>
> This should fix the Chromium Android ASan build with TOT Clang:
> https://build.chromium.org/p/chromium.fyi/builders/ClangToTAndroidASan/
>
> I'll send this patch along to AOSP after fixing it here.
>
> R=thakis@chromium.org,sgurun@chromium.org
> BUG= 609543 
>
> Committed: https://crrev.com/4fbaaecb9433f9503946be68d0ecef63a1b4a164
> Cr-Commit-Position: refs/heads/master@{#391920}

TBR=sgurun@chromium.org,thakis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= 609543 

Review-Url: https://codereview.chromium.org/1959513002
Cr-Commit-Position: refs/heads/master@{#391923}

[modify] https://crrev.com/0e51f7ced0481ce1d31933c64519d0842a52b5c9/third_party/android_platform/README.chromium
[modify] https://crrev.com/0e51f7ced0481ce1d31933c64519d0842a52b5c9/third_party/android_platform/bionic/tools/relocation_packer/src/debug.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5762af8ad13e62957493c3e4314a234ee57a4200

commit 5762af8ad13e62957493c3e4314a234ee57a4200
Author: rnk <rnk@chromium.org>
Date: Thu May 05 23:44:34 2016

Re-land "Fix invalid using decl in bionic relocation_packer"

This time with more namespace qualification.

Tested manually by building clang_x64/android_relocation_packer locally,
as the Android trybot analyze step does not think it needs to run for
this change.

Original description:

> The code was essentially doing 'using Logger::INFO' in the global
> namespace to make its 'LOG(INFO)' macros work. Unfortunately, C++ does
> not allow you to use using decls on classes like this unless you are in
> a derived class. GCC does not accept this code, and Clang was recently
> updated (LLVM r268594) to reject it as well.
>
> This should fix the Chromium Android ASan build with TOT Clang:
> https://build.chromium.org/p/chromium.fyi/builders/ClangToTAndroidASan/

TBR=thakis@chromium.org,sgurun@chromium.org
BUG= 609543 

Review-Url: https://codereview.chromium.org/1952353005
Cr-Commit-Position: refs/heads/master@{#391952}

[modify] https://crrev.com/5762af8ad13e62957493c3e4314a234ee57a4200/third_party/android_platform/README.chromium
[modify] https://crrev.com/5762af8ad13e62957493c3e4314a234ee57a4200/third_party/android_platform/bionic/tools/relocation_packer/src/debug.h