touch: Fix switching focus among fields in webpages.

touch: Fix switching focus among fields in webpages.

If Tab is pressed, then the RootView needs to process it first,
because the focus-manager will move the focus to the next focusable
view, without letting the currently focused view process it (which
means, for example, tab-ing to move focus between fields/links in a
RenderWidgetHostViewViews won't work). For all other keys, let the
focus manager process it first so that the keyboard accelerators can
be triggered.

BUG=pressing tab in a textfield in a touch-build doesn't move focus out of it.
TEST=see bug

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=69846

[rjkroege, 2010-12-20 19:21:17]

LGTM.

[sky, 2010-12-20 20:58:29]

Could you get Jay to review this?

Thanks,

  -Scott

[sadrul, 2010-12-21 18:33:33]

PTAL!

[Jay Civelli, 2010-12-21 18:42:10]

LGTM