Reland of build: Enable optimize_for_size unconditionally.

Reland of build: Enable optimize_for_size unconditionally. (patchset #1 id:1 of https://codereview.chromium.org/2881503002/ )

Reason for revert:
Relanding now that the msan issue is fixed: https://codereview.chromium.org/2876693003

Original issue's description:
> Revert of build: Enable optimize_for_size unconditionally. (patchset #1 id:1 of https://codereview.chromium.org/2864383003/ )
> 
> Reason for revert:
> Causes failures on a MSAN bot.
> https://uberchromegw.corp.google.com/i/chromium.memory/builders/Linux%20ChromiumOS%20MSan%20Tests/builds/440
> 
> 
> Original issue's description:
> > build: Enable optimize_for_size unconditionally.
> > 
> > This change causes us to favor size over speed on Linux and Mac,
> > which aligns the build config for those platforms with that of the
> > other supported platforms, and should reduce the binary size impact
> > of enabling ThinLTO. This change is expected to reduce binary size
> > for Linux official builds by about 15%.
> > 
> > There may be unacceptable perf regressions associated with this
> > change, but the perf bots should at least let us know where those
> > regressions are. I plan to monitor the Linux and Mac perf bots once
> > it lands.
> > 
> > BUG=660216
> > R=thakis@chromium.org
> > 
> > Review-Url: https://codereview.chromium.org/2864383003
> > Cr-Commit-Position: refs/heads/master@{#470606}
> > Committed: https://chromium.googlesource.com/chromium/src/+/c1269ce7fec8568a1789e07b2b5bb3b630a67f5f
> 
> TBR=thakis@chromium.org,pcc@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=660216
> 
> Review-Url: https://codereview.chromium.org/2881503002
> Cr-Commit-Position: refs/heads/master@{#470793}
> Committed: https://chromium.googlesource.com/chromium/src/+/2a6f440fa84a584d916254f9a4c4e4d83c53435f

TBR=thakis@chromium.org,yhirano@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=660216
Review-Url: https://codereview.chromium.org/2870393005
Cr-Commit-Position: refs/heads/master@{#471046}
Committed: https://chromium.googlesource.com/chromium/src/+/ea5fad44dd0b0a74a40dbe2c05598f43861cd75a

[pcc1, 2017-05-11 19:41:18]

The CQ bit was checked by pcc@chromium.org

[pcc1, 2017-05-11 19:41:19]

Created Reland of build: Enable optimize_for_size unconditionally.

[Nico, 2017-05-11 19:41:40]

lgtm

[commit-bot: I haz the power, 2017-05-11 19:42:16]

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, 2017-05-11 19:42:49]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1494531678958990, "parent_rev":
"97b99808511f8918d00add266a8555ba5e21813c", "commit_rev":
"ea5fad44dd0b0a74a40dbe2c05598f43861cd75a"}

[commit-bot: I haz the power, 2017-05-11 19:43:06]

Description was changed from

==========
Reland of build: Enable optimize_for_size unconditionally. (patchset #1 id:1 of
https://codereview.chromium.org/2881503002/ )

Reason for revert:
Relanding now that the msan issue is fixed:
https://codereview.chromium.org/2876693003

Original issue's description:
> Revert of build: Enable optimize_for_size unconditionally. (patchset #1 id:1
of https://codereview.chromium.org/2864383003/ )
> 
> Reason for revert:
> Causes failures on a MSAN bot.
>
https://uberchromegw.corp.google.com/i/chromium.memory/builders/Linux%20Chrom...
> 
> 
> Original issue's description:
> > build: Enable optimize_for_size unconditionally.
> > 
> > This change causes us to favor size over speed on Linux and Mac,
> > which aligns the build config for those platforms with that of the
> > other supported platforms, and should reduce the binary size impact
> > of enabling ThinLTO. This change is expected to reduce binary size
> > for Linux official builds by about 15%.
> > 
> > There may be unacceptable perf regressions associated with this
> > change, but the perf bots should at least let us know where those
> > regressions are. I plan to monitor the Linux and Mac perf bots once
> > it lands.
> > 
> > BUG=660216
> > R=thakis@chromium.org
> > 
> > Review-Url: https://codereview.chromium.org/2864383003
> > Cr-Commit-Position: refs/heads/master@{#470606}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/c1269ce7fec8568a1789e07b2b5b...
> 
> TBR=thakis@chromium.org,pcc@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=660216
> 
> Review-Url: https://codereview.chromium.org/2881503002
> Cr-Commit-Position: refs/heads/master@{#470793}
> Committed:
https://chromium.googlesource.com/chromium/src/+/2a6f440fa84a584d916254f9a4c4...

TBR=thakis@chromium.org,yhirano@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=660216
==========

to

==========
Reland of build: Enable optimize_for_size unconditionally. (patchset #1 id:1 of
https://codereview.chromium.org/2881503002/ )

Reason for revert:
Relanding now that the msan issue is fixed:
https://codereview.chromium.org/2876693003

Original issue's description:
> Revert of build: Enable optimize_for_size unconditionally. (patchset #1 id:1
of https://codereview.chromium.org/2864383003/ )
> 
> Reason for revert:
> Causes failures on a MSAN bot.
>
https://uberchromegw.corp.google.com/i/chromium.memory/builders/Linux%20Chrom...
> 
> 
> Original issue's description:
> > build: Enable optimize_for_size unconditionally.
> > 
> > This change causes us to favor size over speed on Linux and Mac,
> > which aligns the build config for those platforms with that of the
> > other supported platforms, and should reduce the binary size impact
> > of enabling ThinLTO. This change is expected to reduce binary size
> > for Linux official builds by about 15%.
> > 
> > There may be unacceptable perf regressions associated with this
> > change, but the perf bots should at least let us know where those
> > regressions are. I plan to monitor the Linux and Mac perf bots once
> > it lands.
> > 
> > BUG=660216
> > R=thakis@chromium.org
> > 
> > Review-Url: https://codereview.chromium.org/2864383003
> > Cr-Commit-Position: refs/heads/master@{#470606}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/c1269ce7fec8568a1789e07b2b5b...
> 
> TBR=thakis@chromium.org,pcc@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=660216
> 
> Review-Url: https://codereview.chromium.org/2881503002
> Cr-Commit-Position: refs/heads/master@{#470793}
> Committed:
https://chromium.googlesource.com/chromium/src/+/2a6f440fa84a584d916254f9a4c4...

TBR=thakis@chromium.org,yhirano@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=660216

Review-Url: https://codereview.chromium.org/2870393005
Cr-Commit-Position: refs/heads/master@{#471046}
Committed:
https://chromium.googlesource.com/chromium/src/+/ea5fad44dd0b0a74a40dbe2c0559...
==========

[commit-bot: I haz the power, 2017-05-11 19:43:07]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/ea5fad44dd0b0a74a40dbe2c0559...

[pcc1, 2017-05-15 19:58:11]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2883113002/ by pcc@chromium.org.

The reason for reverting is: Large number of perf regressions on mac.

BUG=722473.