Chromecast: crash upload logic improvements for Android.

Chromecast: crash upload logic improvements for Android.

* If HTTP 400 is returned from crash server, dump file is rejected.
  Delete to avoid reattempting later.
* Some crash dumps don't have process ID at end. Queue for upload
  so they either get processed or deleted.

R=lcwu@chromium.org,byungchul@chromium.org
BUG=None

Committed: https://crrev.com/28ee41b69feb19b95e4a33e7ef11b578b321de3a
Cr-Commit-Position: refs/heads/master@{#300759}

[byungchul, 2014-10-22 18:54:10]

lgtm

[lcwu1, 2014-10-22 18:56:38]

lgtm

[gunsch, 2014-10-22 18:57:37]

The CQ bit was checked by gunsch@chromium.org

[commit-bot: I haz the power, 2014-10-22 19:00:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/662393005/1

[commit-bot: I haz the power, 2014-10-22 19:12:09]

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

[commit-bot: I haz the power, 2014-10-22 19:12:10]

Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  linux_chromium_gn_dbg on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_gn_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[gunsch, 2014-10-22 19:35:05]

The CQ bit was checked by gunsch@chromium.org

[commit-bot: I haz the power, 2014-10-22 19:37:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/662393005/1

[commit-bot: I haz the power, 2014-10-22 21:16:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-22 21:18:06]

Patchset 1 (id:??) landed as
https://crrev.com/28ee41b69feb19b95e4a33e7ef11b578b321de3a
Cr-Commit-Position: refs/heads/master@{#300759}