https://codereview.chromium.org/2765793002/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ad039f65398a94f4a28751c303df388cff4bbca3

commit ad039f65398a94f4a28751c303df388cff4bbca3
Author: horo <horo@chromium.org>
Date: Tue Mar 21 07:02:56 2017

Revert of Fix free memory calculation. (patchset #27 id:520001 of https://codereview.chromium.org/2558043007/ )

Reason for revert:
SysInfoTest.AmountOfAvailablePhysicalMemory is failing

BUG= 703522 

Original issue's description:
> Fix free memory calculation.
>
> The term "free memory" can mean different things: it can mean
> 1) absolutely/pure free physical memory (not consumed by anything) or
> 2) it can include the inactive part(s) of OS (file) cache(s) or
> 3) it can mean the maximum amount of physical memory that can be
> allocated quickly without swapping and thus can also include the
> active part(s) of OS cache(s).
>
> This CL fixes base::AmountOfAvailablePhysicalMemory() to function
> according to the 2nd meaning on all platforms where it is possible
> because this is what everyone needs most of the time. (Win platform
> has already had such implementation but others haven't).
>
> BUG= 672745 
>
> Review-Url: https://codereview.chromium.org/2558043007
> Cr-Commit-Position: refs/heads/master@{#458291}
> Committed: https://chromium.googlesource.com/chromium/src/+/a4258cad75d8cc63170555cc74bd584b5bfca965

TBR=primiano@chromium.org,danakj@chromium.org,brucedawson@chromium.org,xiyuan@chromium.org,chrisha@chromium.org,haraken@chromium.org,mkolom@yandex-team.ru
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= 672745 

Review-Url: https://codereview.chromium.org/2766623002
Cr-Commit-Position: refs/heads/master@{#458333}

[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/process/process_metrics.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/process/process_metrics.h
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/process/process_metrics_ios.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/process/process_metrics_linux.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/process/process_metrics_mac.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/process/process_metrics_unittest.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/process/process_metrics_win.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/sys_info.h
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/sys_info_ios.mm
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/sys_info_linux.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/sys_info_mac.mm
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/sys_info_openbsd.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/sys_info_unittest.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/base/sys_info_win.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/chrome/browser/ui/webui/about_ui.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/components/memory_pressure/direct_memory_pressure_calculator_win.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/components/memory_pressure/direct_memory_pressure_calculator_win_unittest.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/content/browser/memory/memory_monitor_win.cc
[modify] https://crrev.com/ad039f65398a94f4a28751c303df388cff4bbca3/content/browser/memory/memory_monitor_win_unittest.cc

It was better to disable the test.