Slow Reports - Allow URL to be set on TraceCrashServiceUploader.

Slow Reports - Allow URL to be set on TraceCrashServiceUploader.

We can use this for both Deep Reports (since those get sent to a different server), and for Slow Reports will need this to route to another endpoint.

BUG=498419
Committed: https://crrev.com/3e15a0d13c98c36da2d99e8800f4c44535d905e0
Cr-Commit-Position: refs/heads/master@{#333736}

[shatch, 2015-06-09 19:31:28]

simonhatch@chromium.org changed reviewers:
+ dsinclair@chromium.org

[dsinclair, 2015-06-10 14:26:44]

lgtm

[shatch, 2015-06-10 14:46:07]

The CQ bit was checked by simonhatch@chromium.org

[commit-bot: I haz the power, 2015-06-10 14:46:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1164313006/1

[commit-bot: I haz the power, 2015-06-10 15:19:47]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-10 15:20:43]

Patchset 1 (id:??) landed as
https://crrev.com/3e15a0d13c98c36da2d99e8800f4c44535d905e0
Cr-Commit-Position: refs/heads/master@{#333736}