bindings: Stop using strings directly when throwing exceptions

bindings: Stop using strings directly when throwing exceptions

Replace occurrences of "raise 'foo bar'" with "raise ValueError('foo bar')",
otherwise we get another exception ourselves:

    TypeError: exceptions must be old-style classes or derived from BaseException, not str

R=bashi@chromium.org,haraken@chromium.org,yukishiino@chromium.org

Review-Url: https://codereview.chromium.org/2751063004
Cr-Commit-Position: refs/heads/master@{#457401}
Committed: https://chromium.googlesource.com/chromium/src/+/f35532b8b4f9c1be7dde2a464071b4730122e3a6

[Raphael Kubo da Costa (rakuco), 2017-03-16 10:33:53]

The CQ bit was checked by raphael.kubo.da.costa@intel.com to run a CQ dry run

[Raphael Kubo da Costa (rakuco), 2017-03-16 10:34:01]

PTAL

[commit-bot: I haz the power, 2017-03-16 10:34:04]

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

[haraken, 2017-03-16 10:36:41]

LGTM

[commit-bot: I haz the power, 2017-03-16 11:57:22]

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

[commit-bot: I haz the power, 2017-03-16 11:57:23]

Dry run: This issue passed the CQ dry run.

[Raphael Kubo da Costa (rakuco), 2017-03-16 12:01:29]

The CQ bit was checked by raphael.kubo.da.costa@intel.com

[commit-bot: I haz the power, 2017-03-16 12:01:56]

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, 2017-03-16 12:06:49]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489665689715010, "parent_rev":
"633ac075e5897f9ed9bf928e004658833447a4f1", "commit_rev":
"f35532b8b4f9c1be7dde2a464071b4730122e3a6"}

[commit-bot: I haz the power, 2017-03-16 12:07:33]

Description was changed from

==========
bindings: Stop using strings directly when throwing exceptions

Replace occurrences of "raise 'foo bar'" with "raise ValueError('foo bar')",
otherwise we get another exception ourselves:

    TypeError: exceptions must be old-style classes or derived from
BaseException, not str

R=bashi@chromium.org,haraken@chromium.org,yukishiino@chromium.org
==========

to

==========
bindings: Stop using strings directly when throwing exceptions

Replace occurrences of "raise 'foo bar'" with "raise ValueError('foo bar')",
otherwise we get another exception ourselves:

    TypeError: exceptions must be old-style classes or derived from
BaseException, not str

R=bashi@chromium.org,haraken@chromium.org,yukishiino@chromium.org

Review-Url: https://codereview.chromium.org/2751063004
Cr-Commit-Position: refs/heads/master@{#457401}
Committed:
https://chromium.googlesource.com/chromium/src/+/f35532b8b4f9c1be7dde2a464071...
==========

[commit-bot: I haz the power, 2017-03-16 12:07:34]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/f35532b8b4f9c1be7dde2a464071...

[bashi, 2017-03-16 12:20:11]

lgtm

[Yuki, 2017-03-16 13:29:14]

LGTM.