Move the USB API tests into app_shell_browsertests.

Move the USB API tests into app_shell_browsertests.

These tests do not need the full power of browser_tests and API tests
like these will eventually be moved out of app_shell_browsertests into a
new extensions_browsertests target that takes advantage of the lighter
app_shell framework.

BUG=

Committed: https://crrev.com/9fab544ca75f9db80a0c6a790b7abcce04c36c58
Cr-Commit-Position: refs/heads/master@{#302174}

[Reilly Grant (use Gerrit), 2014-10-30 21:22:40]

reillyg@chromium.org changed reviewers:
+ yoz@chromium.org

[Reilly Grant (use Gerrit), 2014-10-30 21:22:57]

yoz@, please take a look.

[Yoyo Zhou, 2014-10-30 21:36:24]

Nice. LGTM. By the way, FYI, we don't have Mac test coverage yet. Soon,
hopefully...

https://codereview.chromium.org/695613002/diff/1/extensions/browser/api/usb/u...
File extensions/browser/api/usb/usb_apitest.cc (left):

https://codereview.chromium.org/695613002/diff/1/extensions/browser/api/usb/u...
extensions/browser/api/usb/usb_apitest.cc:162: #pragma warning(pop)
Why this change?

[Reilly Grant (use Gerrit), 2014-10-30 21:43:23]

Since all this code is pretty platform-neutral I'm not too concerned about the
lack of OS X support but good to know it won't be an issue for long!

https://codereview.chromium.org/695613002/diff/1/extensions/browser/api/usb/u...
File extensions/browser/api/usb/usb_apitest.cc (left):

https://codereview.chromium.org/695613002/diff/1/extensions/browser/api/usb/u...
extensions/browser/api/usb/usb_apitest.cc:162: #pragma warning(pop)
On 2014/10/30 21:36:24, Yoyo Zhou wrote:
> Why this change?

The pragma silenced a warning related to those consts I removed above. When I
fixed the interface (the consts are unnecessary and confuse MSVC) I didn't
notice that this file needed to be changed because the warning had been
disabled.

[Reilly Grant (use Gerrit), 2014-10-30 21:47:48]

The CQ bit was checked by reillyg@chromium.org

[commit-bot: I haz the power, 2014-10-30 21:49:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/695613002/1

[commit-bot: I haz the power, 2014-10-30 22:34:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-30 22:36:14]

Patchset 1 (id:??) landed as
https://crrev.com/9fab544ca75f9db80a0c6a790b7abcce04c36c58
Cr-Commit-Position: refs/heads/master@{#302174}