Move helper utilities for the DOM Distiller Viewer to core.

Move helper utilities for the DOM Distiller Viewer to core.

This CL moves the logic for creating HTML content, and retrieving resources
from the content/ subfolder of the component to core/.

It also provides a helper method for calling the right method on the
DomDistillerService based on a URL.

BUG=319881
TBR=jochen@chromium.org
TBR=jshin@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=263511

[nyquist, 2014-04-11 21:40:58]

cjhopman: PTAL

[cjhopman, 2014-04-11 21:49:21]

lgtm

[nyquist, 2014-04-12 04:00:33]

jochen: TBR for components/components_tests.gyp
jshin: TBR for moving ui/base/l10n DEPS from components/dom_distiller/content to
components/dom_distiller/core.

[nyquist, 2014-04-12 05:20:37]

The CQ bit was checked by nyquist@chromium.org

[commit-bot: I haz the power, 2014-04-12 05:20:43]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nyquist@chromium.org/235833003/40001

[commit-bot: I haz the power, 2014-04-12 06:04:10]

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

[commit-bot: I haz the power, 2014-04-12 06:04:11]

Retried try job too often on ios_dbg_simulator for step(s) base_unittests,
compile, components_unittests, content_unittests, crypto_unittests,
net_unittests, sql_unittests, ui_unittests, url_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=ios_dbg_si...

[nyquist, 2014-04-12 06:17:12]

The CQ bit was checked by nyquist@chromium.org

[commit-bot: I haz the power, 2014-04-12 06:17:27]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/nyquist@chromium.org/235833003/60001

[commit-bot: I haz the power, 2014-04-12 10:45:52]

Change committed as 263511