Make blimp work on K

Make blimp work on K

The blimp engine is currently using Android M fonts, which works only
with Android M clients. However, we need to make it work for K because
currently clank only run layout tests on K devices.

This CL adds a set of KTU84Z fonts to be used, ensure that they are part
of the engine bundle, and update the documentation for where they are
checked out, and how to use them in local engines.

This also update client_engine_integration.py, so that the engine knows
which system the client is on, and set the correct font path itself.
When the zygote process starts, it looks at the android-fonts-path flag,
It sets fonts.xml if the client is M, and sets system_fonts.xml &
fallback_fonts.xml if the client is K.

BUG=637117
Committed: https://crrev.com/20b549e660ff8420a8c400297a12779bb28c11ef
Cr-Commit-Position: refs/heads/master@{#411768}

[Menglin, 2016-08-11 22:37:32]

mlliu@chromium.org changed reviewers:
+ nyquist@chromium.org, sievers@chromium.org

[Menglin, 2016-08-11 22:37:32]

sievers@chromium.org: Please review changes in 
content/zygote/zygote_main_linux.cc
nyquist@chromium.org: Please review changes in 
the other files

[nyquist, 2016-08-12 03:44:12]

blimp and third_party/blimp_font lgtm

https://codereview.chromium.org/2239923002/diff/1/blimp/docs/running.md
File blimp/docs/running.md (right):

https://codereview.chromium.org/2239923002/diff/1/blimp/docs/running.md#newco...
blimp/docs/running.md:166: If the android client is kitkat system, this would be
Android* and KitKat*

https://codereview.chromium.org/2239923002/diff/1/blimp/docs/running.md#newco...
blimp/docs/running.md:168: If the android client is marshmallow system, this
would be
Android* and Marshmallow*

https://codereview.chromium.org/2239923002/diff/1/third_party/blimp_fonts/LIC...
File third_party/blimp_fonts/LICENSE (right):

https://codereview.chromium.org/2239923002/diff/1/third_party/blimp_fonts/LIC...
third_party/blimp_fonts/LICENSE:196: The font files below are in the
font_bundle/kitkit subdirectory.
kitkat

[no sievers, 2016-08-12 17:15:40]

content lgtm

[Menglin, 2016-08-12 19:25:09]

https://codereview.chromium.org/2239923002/diff/1/blimp/docs/running.md
File blimp/docs/running.md (right):

https://codereview.chromium.org/2239923002/diff/1/blimp/docs/running.md#newco...
blimp/docs/running.md:166: If the android client is kitkat system, this would be
On 2016/08/12 03:44:12, nyquist wrote:
> Android* and KitKat*

Done.

https://codereview.chromium.org/2239923002/diff/1/blimp/docs/running.md#newco...
blimp/docs/running.md:168: If the android client is marshmallow system, this
would be
On 2016/08/12 03:44:12, nyquist wrote:
> Android* and Marshmallow*

Done.

https://codereview.chromium.org/2239923002/diff/1/third_party/blimp_fonts/LIC...
File third_party/blimp_fonts/LICENSE (right):

https://codereview.chromium.org/2239923002/diff/1/third_party/blimp_fonts/LIC...
third_party/blimp_fonts/LICENSE:196: The font files below are in the
font_bundle/kitkit subdirectory.
On 2016/08/12 03:44:12, nyquist wrote:
> kitkat

Done.

[Menglin, 2016-08-12 19:25:13]

The CQ bit was checked by mlliu@chromium.org

[Menglin, 2016-08-12 19:25:14]

The patchset sent to the CQ was uploaded after l-g-t-m from
nyquist@chromium.org, sievers@chromium.org
Link to the patchset: https://codereview.chromium.org/2239923002/#ps20001
(title: "nits and sync to head")

[commit-bot: I haz the power, 2016-08-12 19:26:15]

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, 2016-08-12 21:13:21]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-08-12 21:21:09]

Description was changed from

==========
Make blimp work on K

The blimp engine is currently using Android M fonts, which works only
with Android M clients. However, we need to make it work for K because
currently clank only run layout tests on K devices.

This CL adds a set of KTU84Z fonts to be used, ensure that they are part
of the engine bundle, and update the documentation for where they are
checked out, and how to use them in local engines.

This also update client_engine_integration.py, so that the engine knows
which system the client is on, and set the correct font path itself.
When the zygote process starts, it looks at the android-fonts-path flag,
It sets fonts.xml if the client is M, and sets system_fonts.xml &
fallback_fonts.xml if the client is K.

BUG=637117
==========

to

==========
Make blimp work on K

The blimp engine is currently using Android M fonts, which works only
with Android M clients. However, we need to make it work for K because
currently clank only run layout tests on K devices.

This CL adds a set of KTU84Z fonts to be used, ensure that they are part
of the engine bundle, and update the documentation for where they are
checked out, and how to use them in local engines.

This also update client_engine_integration.py, so that the engine knows
which system the client is on, and set the correct font path itself.
When the zygote process starts, it looks at the android-fonts-path flag,
It sets fonts.xml if the client is M, and sets system_fonts.xml &
fallback_fonts.xml if the client is K.

BUG=637117

Committed: https://crrev.com/20b549e660ff8420a8c400297a12779bb28c11ef
Cr-Commit-Position: refs/heads/master@{#411768}
==========

[commit-bot: I haz the power, 2016-08-12 21:21:10]

Patchset 2 (id:??) landed as
https://crrev.com/20b549e660ff8420a8c400297a12779bb28c11ef
Cr-Commit-Position: refs/heads/master@{#411768}