Move net.html import down into the modules that use it

Move net.html import down into the modules that use it

Avoid importing net.html in the top level and instead have the files that
use it importing it themselves.

NOTRY=true

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180123

[ojan, 2014-08-12 23:58:38]

The CQ bit was checked by ojan@chromium.org

[ojan, 2014-08-12 23:58:39]

lgtm

[commit-bot: I haz the power, 2014-08-13 00:00:43]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/leviw@chromium.org/467013002/1

[commit-bot: I haz the power, 2014-08-13 00:03:27]

Change committed as 180123