Include content_shell.pak with the webkit_unit_tests_apk as internal asset.

Include content_shell.pak with the webkit_unit_tests_apk as internal asset.

With the CL, https://codereview.chromium.org/456413002, we are migrating from embedding inline resources
inside blink towards using chromium's grd resource system. As part of this effort, most of the tests
would require to use the 'pak' files packaged as android application assets.

These assets need to be extracted to the application data directory during the startup of the test
application. The native libraries would be able to work with these 'pak' files only after the extraction
from the asset manager. Adding the required 'content_shell.pak' to the target webkit_unit_tests_apk.

BUG=312586
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181556

[vivekg, 2014-09-06 21:41:38]

vivekg@chromium.org changed reviewers:
+ abarth@chromium.org, jochen@chromium.org

[vivekg, 2014-09-06 21:42:02]

vivekg@chromium.org changed reviewers:
+ vivekg@chromium.org

[vivekg, 2014-09-06 21:42:03]

PTAL, thank you.

[vivekg, 2014-09-06 22:04:10]

Relevant Java side changes can be found here:
https://codereview.chromium.org/548023002

[vivekg, 2014-09-08 11:09:19]

@jochen, any comments on the overall changes required?

[jochen (gone - plz use gerrit), 2014-09-08 12:02:09]

lgtm

[vivekg, 2014-09-08 12:02:39]

The CQ bit was checked by vivekg@chromium.org

[commit-bot: I haz the power, 2014-09-08 12:03:25]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/vivek.vg@samsung.com/549863002/1

[commit-bot: I haz the power, 2014-09-08 13:06:49]

Committed patchset #1 (id:1) as 181556