android: Turn on fission and symbol_level=2 by default.

Use fission on Android, and in Linux release builds.

Android's 32-bit binary was too large for the 32-bit ELF container with
full symbols, so it switched to use symbol_level=1 by default.
Fission makes the binary small enough that we can turn symbol_level=2
back on.

Also, on Linux we only used fission if is_debug, while we should use
it if symbol_level == 2 (i.e. both in debug and in release+symbols
builds).

BUG=735027, 721792

[Nico, 2017-06-27 14:53:47]

The CQ bit was checked by thakis@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-06-27 14:54:00]

Dry run: 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, 2017-06-27 14:57:52]

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

[commit-bot: I haz the power, 2017-06-27 14:57:53]

Dry run: Try jobs failed on following builders:
  android_clang_dbg_recipe on master.tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/android_clan...)
  android_compile_dbg on master.tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/android_comp...)

[Nico, 2017-06-27 15:18:32]

The CQ bit was checked by thakis@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-06-27 15:18:43]

Dry run: CQ is trying da patch.

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

[Nico, 2017-06-27 15:24:48]

The CQ bit was checked by thakis@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-06-27 15:24:54]

Dry run: CQ is trying da patch.

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

[Nico, 2017-06-27 15:26:27]

Description was changed from

==========
android: Turn on fission and symbol_level=2 by default.

Android's 32-bit binary was too large for the 32-bit ELF container with
full symbols, so it switched to use symbol_level=1 by default.

Fission makes the binary small enough that we can turn symbol_level=2
back on.

BUG=
==========

to

==========
Use fission on Android, and in Linux release builds.

Android's 32-bit binary was too large for the 32-bit ELF container with
full symbols, so it switched to use symbol_level=1 by default.
Fission makes the binary small enough that we can turn symbol_level=2
back on.

Also, on Linux we only used fission if is_debug, while we should use
it if symbol_level == 2 (i.e. both in debug and in release+symbols
builds).

BUG=735027
==========

[Nico, 2017-06-27 15:28:42]

Description was changed from

==========
Use fission on Android, and in Linux release builds.

Android's 32-bit binary was too large for the 32-bit ELF container with
full symbols, so it switched to use symbol_level=1 by default.
Fission makes the binary small enough that we can turn symbol_level=2
back on.

Also, on Linux we only used fission if is_debug, while we should use
it if symbol_level == 2 (i.e. both in debug and in release+symbols
builds).

BUG=735027
==========

to

==========
Use fission on Android, and in Linux release builds.

Android's 32-bit binary was too large for the 32-bit ELF container with
full symbols, so it switched to use symbol_level=1 by default.
Fission makes the binary small enough that we can turn symbol_level=2
back on.

Also, on Linux we only used fission if is_debug, while we should use
it if symbol_level == 2 (i.e. both in debug and in release+symbols
builds).

BUG=735027,721792
==========

[commit-bot: I haz the power, 2017-06-27 16:43:52]

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

[commit-bot: I haz the power, 2017-06-27 16:43:53]

Dry run: This issue passed the CQ dry run.