Content Shell: Introduce LayoutTestDownloadManagerDelegate.

Content Shell: Introduce LayoutTestDownloadManagerDelegate.

This patch moves the DRT-specific bits of ShellDownloadManagerDelegate
into a new layout-test-only subclass.

BUG=420994
Committed: https://crrev.com/c639ead18a3f710cade31c9dd7ff383fc731a5c4
Cr-Commit-Position: refs/heads/master@{#299107}

[Mike West, 2014-10-10 11:10:45]

Patchset #1 (id:1) has been deleted

[Mike West, 2014-10-10 11:11:46]

mkwst@chromium.org changed reviewers:
+ jochen@chromium.org

[Mike West, 2014-10-10 11:11:47]

WDYT, Jochen?

This depends on re-landing https://codereview.chromium.org/641343002/. I'll
throw it at the bots once that goes through.

https://codereview.chromium.org/648673002/diff/60001/content/shell/browser/la...
File content/shell/browser/layout_test/layout_test_browser_context.cc (left):

https://codereview.chromium.org/648673002/diff/60001/content/shell/browser/la...
content/shell/browser/layout_test/layout_test_browser_context.cc:42: //
LayoutTestDownloadManagerDelegate.
We couldn't avoid this bit; I didn't notice that the patch came from the browser
context object. :/

[jochen (gone - plz use gerrit), 2014-10-10 11:18:55]

lgtm

[Mike West, 2014-10-10 11:45:46]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-10-10 11:46:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/648673002/60001

[commit-bot: I haz the power, 2014-10-10 13:53:52]

Committed patchset #1 (id:60001)

[commit-bot: I haz the power, 2014-10-10 13:54:18]

Patchset 1 (id:??) landed as
https://crrev.com/c639ead18a3f710cade31c9dd7ff383fc731a5c4
Cr-Commit-Position: refs/heads/master@{#299107}