Create PasswordManagerDriver and ContentPasswordManagerDriver.

Create PasswordManagerDriver and ContentPasswordManagerDriver.

This CL carves the PasswordManagerDriver driver interface for the
PasswordManager component out of the PasswordManagerDelegate interface, which
will be the embedder-level interface for the component. It also creates the
ContentPasswordManagerDriver //content-based implementation of the driver
interface and sets up the ownership relationship between
ContentPasswordManagerDriver and PasswordManagerDelegateImpl. This CL does not
yet publically expose the PasswordManagerDriver interface to the
PasswordManager core code, instead having PasswordManagerDelegateImpl forward
calls to ContentPasswordManagerDriver. Follow-up CLs will eliminate this
forwarding.

BUG=335096
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=248487

[Garrett Casto, 2014-02-03 12:08:33]

lgtm

[blundell, 2014-02-03 12:09:37]

The CQ bit was checked by blundell@chromium.org

[commit-bot: I haz the power, 2014-02-03 12:09:51]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/blundell@chromium.org/152643002/30001

[commit-bot: I haz the power, 2014-02-03 14:11:31]

Change committed as 248487

[commit-bot: I haz the power, 2014-02-03 14:11:36]

CQ bit was unchecked on CL. Ignoring.

[commit-bot: I haz the power, 2014-02-03 14:11:40]

CQ bit was unchecked on CL. Ignoring.