Android: improvements to make jni_generator work outside of chromium

A few improvements to make jni_generator work outside of chromium.

* Print a usage message if called with no (valid) arguments.
* Determine the script name by stripping before either 'base' or
    'third_party', or strip nothing if neither name can be found in
    the path.
* Allow overriding the script name, and use this in the tests to be
  path-agnostic.

TBR=rmcilroy@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=226503

[rmcilroy_google, 2013-09-24 11:29:51]

lgtm

[rmcilroy, 2013-09-24 11:31:27]

lgtm

lgtm from my chromium account too...

[commit-bot: I haz the power, 2013-09-25 10:07:45]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[commit-bot: I haz the power, 2013-09-26 08:10:41]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[commit-bot: I haz the power, 2013-09-27 08:08:23]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[bulach, 2013-09-27 12:59:36]

hey ross, I updated the patch with the latest changes, would you mind another
quick look please?

[rmcilroy, 2013-09-27 13:07:28]

On 2013/09/27 12:59:36, bulach wrote:
> hey ross, I updated the patch with the latest changes, would you mind another
> quick look please?

lgtm with one nit.

[rmcilroy, 2013-09-27 13:07:56]

lgtm

https://codereview.chromium.org/23702057/diff/11001/base/android/jni_generato...
File base/android/jni_generator/jni_generator_tests.py (right):

https://codereview.chromium.org/23702057/diff/11001/base/android/jni_generato...
base/android/jni_generator/jni_generator_tests.py:25: class Options(object):
nit - MockOptions? or maybe TestOptions?

[commit-bot: I haz the power, 2013-09-30 09:04:33]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[bulach, 2013-09-30 09:04:50]

thanks! addressed, CQing with fingers crossed this time. :)

https://codereview.chromium.org/23702057/diff/11001/base/android/jni_generato...
File base/android/jni_generator/jni_generator_tests.py (right):

https://codereview.chromium.org/23702057/diff/11001/base/android/jni_generato...
base/android/jni_generator/jni_generator_tests.py:25: class Options(object):
On 2013/09/27 13:07:56, rmcilroy wrote:
> nit - MockOptions? or maybe TestOptions?

Done.

[commit-bot: I haz the power, 2013-09-30 15:10:02]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[commit-bot: I haz the power, 2013-10-01 10:08:19]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[commit-bot: I haz the power, 2013-10-02 10:53:47]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[bulach, 2013-10-02 11:08:04]

it has been reviewed but the "committership" flag hasn't been flipped yet, so
I'm TBRing..

[commit-bot: I haz the power, 2013-10-02 11:08:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/bulach@chromium.org/23702057/17001

[commit-bot: I haz the power, 2013-10-02 12:46:46]

Step "update" is always a major failure.
Look at the try server FAQ for more details.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=android_cl...

[commit-bot: I haz the power, 2013-10-02 16:32:09]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/bulach@chromium.org/23702057/17001

[commit-bot: I haz the power, 2013-10-02 18:11:28]

Change committed as 226503