Reland of Android: Use linker script to hide all non-JNI symbols

Reland of Android: Use linker script to hide all non-JNI symbols (patchset #1 id:1 of https://codereview.chromium.org/2685933002/ )

Reason for revert:
Revert fixed WebKit Android (Nexus4) but... I also reverted https://codereview.chromium.org/2680943003 in parallel as EST sheriff... so now we don't know which one fixed it... tentatively relanding this one to see..!

Original issue's description:
> Revert of Android: Use linker script to hide all non-JNI symbols (patchset #4 id:60001 of https://codereview.chromium.org/2633593004/ )
> 
> Reason for revert:
> Speculative revert, potential culprit for webkit_tests crashing on "WebKit Android (Nexus4)". 
> 
> Stack traces show not much else than JNI managed->native transitions and syscalls.
> 
> Original issue's description:
> > Android: Use linker script to hide all non-JNI symbols
> > 
> > The linker script is applied to all shared_library() targets by default,
> > just like the hide_jni one was.
> > 
> > This reduces the size of libchrome.so by 220kb.
> > 
> > BUG=448386
> > CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_cronet_tester
> > 
> > Review-Url: https://codereview.chromium.org/2633593004
> > Cr-Commit-Position: refs/heads/master@{#448988}
> > Committed: https://chromium.googlesource.com/chromium/src/+/6888d5002b2eabe4fac226f0e5124fbd62bdd215
> 
> TBR=torne@chromium.org,digit@chromium.org,brettw@chromium.org,agrieve@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=448386
> 
> Review-Url: https://codereview.chromium.org/2685933002
> Cr-Commit-Position: refs/heads/master@{#449028}
> Committed: https://chromium.googlesource.com/chromium/src/+/de69a7c823b439d35e7ee716a1da25e05a871efe

TBR=torne@chromium.org,digit@chromium.org,brettw@chromium.org,agrieve@chromium.org,engedy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=448386
Review-Url: https://codereview.chromium.org/2683013002
Cr-Commit-Position: refs/heads/master@{#449057}
Committed: https://chromium.googlesource.com/chromium/src/+/59e1841b41f8902a0f300eb8cc412a73725013ed

[gab, 2017-02-08 19:13:11]

The CQ bit was checked by gab@chromium.org

[gab, 2017-02-08 19:13:12]

Created Reland of Android: Use linker script to hide all non-JNI symbols

[commit-bot: I haz the power, 2017-02-08 19:14:00]

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

[gab, 2017-02-08 19:14:30]

The CQ bit was unchecked by gab@chromium.org

[gab, 2017-02-08 19:15:10]

The CQ bit was checked by gab@chromium.org

[commit-bot: I haz the power, 2017-02-08 19:15:38]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486581191622220, "parent_rev":
"ebb40981fa0c1344d02d196090a64ba2ebe76d20", "commit_rev":
"59e1841b41f8902a0f300eb8cc412a73725013ed"}

[commit-bot: I haz the power, 2017-02-08 19:16:06]

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, 2017-02-08 19:16:16]

Description was changed from

==========
Reland of Android: Use linker script to hide all non-JNI symbols (patchset #1
id:1 of https://codereview.chromium.org/2685933002/ )

Reason for revert:
Revert fixed WebKit Android (Nexus4) but... I also reverted
https://codereview.chromium.org/2680943003 in parallel as EST sheriff... so now
we don't know which one fixed it... tentatively relanding this one to see..!

Original issue's description:
> Revert of Android: Use linker script to hide all non-JNI symbols (patchset #4
id:60001 of https://codereview.chromium.org/2633593004/ )
> 
> Reason for revert:
> Speculative revert, potential culprit for webkit_tests crashing on "WebKit
Android (Nexus4)". 
> 
> Stack traces show not much else than JNI managed->native transitions and
syscalls.
> 
> Original issue's description:
> > Android: Use linker script to hide all non-JNI symbols
> > 
> > The linker script is applied to all shared_library() targets by default,
> > just like the hide_jni one was.
> > 
> > This reduces the size of libchrome.so by 220kb.
> > 
> > BUG=448386
> > CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_cronet_tester
> > 
> > Review-Url: https://codereview.chromium.org/2633593004
> > Cr-Commit-Position: refs/heads/master@{#448988}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/6888d5002b2eabe4fac226f0e512...
> 
>
TBR=torne@chromium.org,digit@chromium.org,brettw@chromium.org,agrieve@chromiu...
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=448386
> 
> Review-Url: https://codereview.chromium.org/2685933002
> Cr-Commit-Position: refs/heads/master@{#449028}
> Committed:
https://chromium.googlesource.com/chromium/src/+/de69a7c823b439d35e7ee716a1da...

TBR=torne@chromium.org,digit@chromium.org,brettw@chromium.org,agrieve@chromiu...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=448386
==========

to

==========
Reland of Android: Use linker script to hide all non-JNI symbols (patchset #1
id:1 of https://codereview.chromium.org/2685933002/ )

Reason for revert:
Revert fixed WebKit Android (Nexus4) but... I also reverted
https://codereview.chromium.org/2680943003 in parallel as EST sheriff... so now
we don't know which one fixed it... tentatively relanding this one to see..!

Original issue's description:
> Revert of Android: Use linker script to hide all non-JNI symbols (patchset #4
id:60001 of https://codereview.chromium.org/2633593004/ )
> 
> Reason for revert:
> Speculative revert, potential culprit for webkit_tests crashing on "WebKit
Android (Nexus4)". 
> 
> Stack traces show not much else than JNI managed->native transitions and
syscalls.
> 
> Original issue's description:
> > Android: Use linker script to hide all non-JNI symbols
> > 
> > The linker script is applied to all shared_library() targets by default,
> > just like the hide_jni one was.
> > 
> > This reduces the size of libchrome.so by 220kb.
> > 
> > BUG=448386
> > CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_cronet_tester
> > 
> > Review-Url: https://codereview.chromium.org/2633593004
> > Cr-Commit-Position: refs/heads/master@{#448988}
> > Committed:
https://chromium.googlesource.com/chromium/src/+/6888d5002b2eabe4fac226f0e512...
> 
>
TBR=torne@chromium.org,digit@chromium.org,brettw@chromium.org,agrieve@chromiu...
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=448386
> 
> Review-Url: https://codereview.chromium.org/2685933002
> Cr-Commit-Position: refs/heads/master@{#449028}
> Committed:
https://chromium.googlesource.com/chromium/src/+/de69a7c823b439d35e7ee716a1da...

TBR=torne@chromium.org,digit@chromium.org,brettw@chromium.org,agrieve@chromiu...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=448386

Review-Url: https://codereview.chromium.org/2683013002
Cr-Commit-Position: refs/heads/master@{#449057}
Committed:
https://chromium.googlesource.com/chromium/src/+/59e1841b41f8902a0f300eb8cc41...
==========

[commit-bot: I haz the power, 2017-02-08 19:16:17]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/59e1841b41f8902a0f300eb8cc41...

[Michael Achenbach, 2017-02-08 21:20:05]

Clearly looks broken again, so revert again?
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Android%20%28N...

[gab, 2017-02-08 21:22:12]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2684123002/ by gab@chromium.org.

The reason for reverting is: This was the actual culprit, will re-land v8
rolls..