Revert of macOS: Fix a bug in logic to get all memory regions.

Revert of macOS: Fix a bug in logic to get all memory regions. (patchset #1 id:1 of https://codereview.chromium.org/2786733004/ )

Reason for revert:
This failed ProcessMetricsMemoryDumpProviderTest.NoDuplicateRegions on "Mac ASan 64 Tests (1)".

https://findit-for-me.appspot.com/waterfall/failure?url=https://build.chromium.org/p/chromium.memory/builders/Mac%20ASan%2064%20Tests%20%281%29/builds/28499

Original issue's description:
> macOS: Fix a bug in logic to get all memory regions.
> 
> The logic was accidentally double-counting the size of a memory region, causing
> some memory regions to get skipped.
> 
> BUG=706547
> 
> Review-Url: https://codereview.chromium.org/2786733004
> Cr-Commit-Position: refs/heads/master@{#460585}
> Committed: https://chromium.googlesource.com/chromium/src/+/f955ebf64b34ec9cbdcb137c00bc9bba1867d071

TBR=primiano@chromium.org,erikchen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=706547
Review-Url: https://codereview.chromium.org/2788453002
Cr-Commit-Position: refs/heads/master@{#460619}
Committed: https://chromium.googlesource.com/chromium/src/+/6387395d1a02579a33652086a64384311d576ba0

[stgao, 2017-03-30 01:42:10]

The CQ bit was checked by stgao@chromium.org

[stgao, 2017-03-30 01:42:11]

Created Revert of macOS: Fix a bug in logic to get all memory regions.

[commit-bot: I haz the power, 2017-03-30 01:43:21]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-30 01:45:07]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490838130820180, "parent_rev":
"76f1910f47754bd6ff8aa1666b5eb2c3760fd106", "commit_rev":
"a03e50281afb7809c01032f9bae1a870c4b5be18"}

[commit-bot: I haz the power, 2017-03-30 01:50:54]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490838130820180, "parent_rev":
"288d99c794cbf2548c1389c045bc965b36a3e9f7", "commit_rev":
"6387395d1a02579a33652086a64384311d576ba0"}

[commit-bot: I haz the power, 2017-03-30 01:51:41]

Description was changed from

==========
Revert of macOS: Fix a bug in logic to get all memory regions. (patchset #1 id:1
of https://codereview.chromium.org/2786733004/ )

Reason for revert:
This failed ProcessMetricsMemoryDumpProviderTest.NoDuplicateRegions on "Mac ASan
64 Tests (1)".

https://findit-for-me.appspot.com/waterfall/failure?url=https://build.chromiu...

Original issue's description:
> macOS: Fix a bug in logic to get all memory regions.
> 
> The logic was accidentally double-counting the size of a memory region,
causing
> some memory regions to get skipped.
> 
> BUG=706547
> 
> Review-Url: https://codereview.chromium.org/2786733004
> Cr-Commit-Position: refs/heads/master@{#460585}
> Committed:
https://chromium.googlesource.com/chromium/src/+/f955ebf64b34ec9cbdcb137c00bc...

TBR=primiano@chromium.org,erikchen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=706547
==========

to

==========
Revert of macOS: Fix a bug in logic to get all memory regions. (patchset #1 id:1
of https://codereview.chromium.org/2786733004/ )

Reason for revert:
This failed ProcessMetricsMemoryDumpProviderTest.NoDuplicateRegions on "Mac ASan
64 Tests (1)".

https://findit-for-me.appspot.com/waterfall/failure?url=https://build.chromiu...

Original issue's description:
> macOS: Fix a bug in logic to get all memory regions.
> 
> The logic was accidentally double-counting the size of a memory region,
causing
> some memory regions to get skipped.
> 
> BUG=706547
> 
> Review-Url: https://codereview.chromium.org/2786733004
> Cr-Commit-Position: refs/heads/master@{#460585}
> Committed:
https://chromium.googlesource.com/chromium/src/+/f955ebf64b34ec9cbdcb137c00bc...

TBR=primiano@chromium.org,erikchen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=706547

Review-Url: https://codereview.chromium.org/2788453002
Cr-Commit-Position: refs/heads/master@{#460619}
Committed:
https://chromium.googlesource.com/chromium/src/+/6387395d1a02579a33652086a643...
==========

[commit-bot: I haz the power, 2017-03-30 01:51:41]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6387395d1a02579a33652086a643...