Revert of tcmalloc: Use C++11 atomics where appropriate.

Revert of tcmalloc: Use C++11 atomics where appropriate. (patchset #8 id:140001 of https://codereview.chromium.org/1549913002/ )

Reason for revert:
Caused performance problems (see http://crbug.com/572525 and dupes)

Original issue's description:
> tcmalloc: Use C++11 atomics where appropriate.
>
> Ports these CLs to tcmalloc:
> https://codereview.chromium.org/636783002/
> https://codereview.chromium.org/1466833002/ (except mac)
>
> No intended behavior change, but it should remove
> the static initializer in atomicops_internals_x86_gcc.h
> on Linux.  It's also less code.
>
> BUG=94925, 559247
>
> Committed: https://crrev.com/e13537fe418eff11d3cab9077f6a647d7c74f103
> Cr-Commit-Position: refs/heads/master@{#366904}

TBR=jfb@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=94925, 559247
Committed: https://crrev.com/36388503f7f90d6ce97f15d861a6774e6d9385ee
Cr-Commit-Position: refs/heads/master@{#367069}

[Nico, 2015-12-29 14:26:40]

Created Revert of tcmalloc: Use C++11 atomics where appropriate.

[commit-bot: I haz the power, 2015-12-29 14:26:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1557433002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1557433002/1

[commit-bot: I haz the power, 2015-12-29 14:27:00]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-12-29 14:27:00]

Failed to apply patch for base/allocator/BUILD.gn:
While running git apply --index -3 -p1;
  error: patch failed: base/allocator/BUILD.gn:122
  Falling back to three-way merge...
  Applied patch to 'base/allocator/BUILD.gn' with conflicts.
  U base/allocator/BUILD.gn

Patch:       base/allocator/BUILD.gn
Index: base/allocator/BUILD.gn
diff --git a/base/allocator/BUILD.gn b/base/allocator/BUILD.gn
index
04ca97c558f40b7872ad6ca6c71adf506d420204..04409d3948751200da848a94ff91a7e50d90b448
100644
--- a/base/allocator/BUILD.gn
+++ b/base/allocator/BUILD.gn
@@ -122,10 +122,14 @@
       "$tcmalloc_dir/src/base/abort.cc",
       "$tcmalloc_dir/src/base/abort.h",
       "$tcmalloc_dir/src/base/arm_instruction_set_select.h",
+      "$tcmalloc_dir/src/base/atomicops-internals-arm-generic.h",
+      "$tcmalloc_dir/src/base/atomicops-internals-arm-v6plus.h",
+      "$tcmalloc_dir/src/base/atomicops-internals-linuxppc.h",
       "$tcmalloc_dir/src/base/atomicops-internals-macosx.h",
       "$tcmalloc_dir/src/base/atomicops-internals-windows.h",
+      "$tcmalloc_dir/src/base/atomicops-internals-x86.cc",
+      "$tcmalloc_dir/src/base/atomicops-internals-x86.h",
       "$tcmalloc_dir/src/base/atomicops.h",
-      "$tcmalloc_dir/src/base/atomicops_internals_portable.h",
       "$tcmalloc_dir/src/base/basictypes.h",
       "$tcmalloc_dir/src/base/commandlineflags.h",
       "$tcmalloc_dir/src/base/cycleclock.h",

[Nico, 2015-12-29 14:41:44]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2015-12-29 14:42:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1557433002/230001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1557433002/230001

[commit-bot: I haz the power, 2015-12-29 14:42:32]

Committed patchset #2 (id:230001)

[commit-bot: I haz the power, 2015-12-29 14:43:34]

Description was changed from

==========
Revert of tcmalloc: Use C++11 atomics where appropriate. (patchset #8 id:140001
of https://codereview.chromium.org/1549913002/ )

Reason for revert:
Caused performance problems (see http://crbug.com/572525 and dupes)

Original issue's description:
> tcmalloc: Use C++11 atomics where appropriate.
> 
> Ports these CLs to tcmalloc:
> https://codereview.chromium.org/636783002/
> https://codereview.chromium.org/1466833002/ (except mac)
> 
> No intended behavior change, but it should remove
> the static initializer in atomicops_internals_x86_gcc.h
> on Linux.  It's also less code.
> 
> BUG=94925,559247
> 
> Committed: https://crrev.com/e13537fe418eff11d3cab9077f6a647d7c74f103
> Cr-Commit-Position: refs/heads/master@{#366904}

TBR=jfb@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=94925,559247
==========

to

==========
Revert of tcmalloc: Use C++11 atomics where appropriate. (patchset #8 id:140001
of https://codereview.chromium.org/1549913002/ )

Reason for revert:
Caused performance problems (see http://crbug.com/572525 and dupes)

Original issue's description:
> tcmalloc: Use C++11 atomics where appropriate.
>
> Ports these CLs to tcmalloc:
> https://codereview.chromium.org/636783002/
> https://codereview.chromium.org/1466833002/ (except mac)
>
> No intended behavior change, but it should remove
> the static initializer in atomicops_internals_x86_gcc.h
> on Linux.  It's also less code.
>
> BUG=94925,559247
>
> Committed: https://crrev.com/e13537fe418eff11d3cab9077f6a647d7c74f103
> Cr-Commit-Position: refs/heads/master@{#366904}

TBR=jfb@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=94925,559247

Committed: https://crrev.com/36388503f7f90d6ce97f15d861a6774e6d9385ee
Cr-Commit-Position: refs/heads/master@{#367069}
==========

[commit-bot: I haz the power, 2015-12-29 14:43:36]

Patchset 2 (id:??) landed as
https://crrev.com/36388503f7f90d6ce97f15d861a6774e6d9385ee
Cr-Commit-Position: refs/heads/master@{#367069}