Tweak "debug on start" description in chrome://serviceworker-internals

Tweak "debug on start" description in chrome://serviceworker-internals

Some users of the checkbox reported not expecting the SW to pause on startup.

BUG=455708
Committed: https://crrev.com/3d1009fc28dbd25f79bf5a2418197a97003d49a3
Cr-Commit-Position: refs/heads/master@{#317009}

[falken, 2015-02-19 02:42:24]

falken@chromium.org changed reviewers:
+ horo@chromium.org

[horo, 2015-02-19 03:15:48]

lgtm

[falken, 2015-02-19 03:18:49]

The CQ bit was checked by falken@chromium.org

[commit-bot: I haz the power, 2015-02-19 03:19:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/939763003/1

[commit-bot: I haz the power, 2015-02-19 05:00:50]

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

[commit-bot: I haz the power, 2015-02-19 05:00:51]

Try jobs failed on following builders:
  win_chromium_x64_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[falken, 2015-02-19 05:11:15]

The CQ bit was checked by falken@chromium.org

[commit-bot: I haz the power, 2015-02-19 05:12:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/939763003/1

[commit-bot: I haz the power, 2015-02-19 06:21:27]

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

[commit-bot: I haz the power, 2015-02-19 06:21:28]

Try jobs failed on following builders:
  linux_chromium_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[falken, 2015-02-19 06:50:00]

The CQ bit was checked by falken@chromium.org

[commit-bot: I haz the power, 2015-02-19 06:50:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/939763003/1

[commit-bot: I haz the power, 2015-02-19 07:05:32]

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

[commit-bot: I haz the power, 2015-02-19 07:05:33]

Try jobs failed on following builders:
  android_compile_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_compile...)

[falken, 2015-02-19 07:20:11]

The CQ bit was checked by falken@chromium.org

[commit-bot: I haz the power, 2015-02-19 07:20:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/939763003/1

[commit-bot: I haz the power, 2015-02-19 08:30:58]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-19 08:31:28]

Patchset 1 (id:??) landed as
https://crrev.com/3d1009fc28dbd25f79bf5a2418197a97003d49a3
Cr-Commit-Position: refs/heads/master@{#317009}