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

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

[engedy, 2017-02-08 17:44:00]

The CQ bit was checked by engedy@chromium.org

[engedy, 2017-02-08 17:44:01]

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

[commit-bot: I haz the power, 2017-02-08 17:44:42]

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

[engedy, 2017-02-08 17:45:43]

Buildbot output for failing build:

https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Android%20%28...

[commit-bot: I haz the power, 2017-02-08 17:45:43]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486575840900080, "parent_rev":
"61783f782c418cfe71fa3bd91d4462aee3098c26", "commit_rev":
"de69a7c823b439d35e7ee716a1da25e05a871efe"}

[commit-bot: I haz the power, 2017-02-08 17:46:24]

Description was changed from

==========
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
==========

to

==========
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...
==========

[commit-bot: I haz the power, 2017-02-08 17:46:26]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/de69a7c823b439d35e7ee716a1da...

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

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2683013002/ by gab@chromium.org.

The reason for reverting is: 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..!.

[agrieve, 2017-02-14 20:29:53]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2699473002/ by agrieve@chromium.org.

The reason for reverting is: Will update this description once I figure out the
fix..