Fix adb_install_apk, broken by 9b3e716.

Fix adb_install_apk, broken by 9b3e716.

In http://crrev.com/9b3e716, args.apk was renamed to args.apk_name, but
a couple of exception handlers weren't updated to follow suit. This
fixes them, so they report proper error messages along with upstream
backtraces.

BUG=498232
Committed: https://crrev.com/4582edfe2b138fd63645caddde198dc7fee9bd0a
Cr-Commit-Position: refs/heads/master@{#337048}

[twifkak, 2015-07-01 09:37:00]

twifkak@chromium.org changed reviewers:
+ jbudorick@chromium.org

[jbudorick, 2015-07-01 12:59:21]

lgtm

[twifkak, 2015-07-01 15:43:25]

The CQ bit was checked by twifkak@chromium.org

[commit-bot: I haz the power, 2015-07-01 15:44:00]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1222453003/1

[commit-bot: I haz the power, 2015-07-01 16:56:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-01 16:58:31]

Patchset 1 (id:??) landed as
https://crrev.com/4582edfe2b138fd63645caddde198dc7fee9bd0a
Cr-Commit-Position: refs/heads/master@{#337048}