Revert of Pass -Oz flag to Clang when targeting Android.

Revert of Pass -Oz flag to Clang when targeting Android. (patchset #1 id:1 of https://codereview.chromium.org/2897283002/ )

Reason for revert:
This is causing Chrome to crash on start.  See crbug/726137 for stack.

Original issue's description:
> Pass -Oz flag to Clang when targeting Android.
> 
> Relands https://codereview.chromium.org/1103393002
> 
> BUG=481675, 563748
> 
> Review-Url: https://codereview.chromium.org/2897283002
> Cr-Commit-Position: refs/heads/master@{#474326}
> Committed: https://chromium.googlesource.com/chromium/src/+/3f60b5c86ff481f85ec5809ae1f94ef4c44d0b66

TBR=pcc@chromium.org,thakis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=481675, 563748
Review-Url: https://codereview.chromium.org/2903983002
Cr-Commit-Position: refs/heads/master@{#474485}
Committed: https://chromium.googlesource.com/chromium/src/+/b964d748bd770259233bb89425ba869829d3e4e0

[billorr, 2017-05-24 23:19:51]

The CQ bit was checked by billorr@chromium.org

[billorr, 2017-05-24 23:19:52]

Created Revert of Pass -Oz flag to Clang when targeting Android.

[commit-bot: I haz the power, 2017-05-24 23:20:32]

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, 2017-05-24 23:20:33]

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

[commit-bot: I haz the power, 2017-05-24 23:20:33]

No L-G-T-M from a valid reviewer yet.
CQ run can only be started once the patch has received an L-G-T-M from a full
committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,_not_ a
full super star committer.
Committers are members of the group "project-chromium-committers".
Note that this has nothing to do with OWNERS files.

[pcc1, 2017-05-24 23:21:33]

lgtm

[Nico, 2017-05-25 00:13:36]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2017-05-25 00:14:38]

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, 2017-05-25 00:15:12]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495671216090560, "parent_rev":
"fad476c5b04ee86096641a9ed979239b72c11483", "commit_rev":
"b964d748bd770259233bb89425ba869829d3e4e0"}

[commit-bot: I haz the power, 2017-05-25 00:15:27]

Description was changed from

==========
Revert of Pass -Oz flag to Clang when targeting Android. (patchset #1 id:1 of
https://codereview.chromium.org/2897283002/ )

Reason for revert:
This is causing Chrome to crash on start.  See crbug/726137 for stack.

Original issue's description:
> Pass -Oz flag to Clang when targeting Android.
> 
> Relands https://codereview.chromium.org/1103393002
> 
> BUG=481675,563748
> 
> Review-Url: https://codereview.chromium.org/2897283002
> Cr-Commit-Position: refs/heads/master@{#474326}
> Committed:
https://chromium.googlesource.com/chromium/src/+/3f60b5c86ff481f85ec5809ae1f9...

TBR=pcc@chromium.org,thakis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=481675,563748
==========

to

==========
Revert of Pass -Oz flag to Clang when targeting Android. (patchset #1 id:1 of
https://codereview.chromium.org/2897283002/ )

Reason for revert:
This is causing Chrome to crash on start.  See crbug/726137 for stack.

Original issue's description:
> Pass -Oz flag to Clang when targeting Android.
> 
> Relands https://codereview.chromium.org/1103393002
> 
> BUG=481675,563748
> 
> Review-Url: https://codereview.chromium.org/2897283002
> Cr-Commit-Position: refs/heads/master@{#474326}
> Committed:
https://chromium.googlesource.com/chromium/src/+/3f60b5c86ff481f85ec5809ae1f9...

TBR=pcc@chromium.org,thakis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=481675,563748

Review-Url: https://codereview.chromium.org/2903983002
Cr-Commit-Position: refs/heads/master@{#474485}
Committed:
https://chromium.googlesource.com/chromium/src/+/b964d748bd770259233bb89425ba...
==========

[commit-bot: I haz the power, 2017-05-25 00:15:29]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/b964d748bd770259233bb89425ba...

[Nico, 2017-05-28 04:35:07]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2909833002/ by thakis@chromium.org.

The reason for reverting is: Crash cause got fixed, this should work now..