ash: Add launcher overflow bubble.

ash: Add launcher overflow bubble.

- Host a LauncherView in bubble to display overflown items;
- Mouse wheel and two-finger scroll to scroll the LauncherView in bubble in case overflow bubble is overflown;
- Fit bubble when items are added/removed;
- Keep launcher bar on screen when the bubble is shown;

BUG=128054
TEST=Verify launcher overflown items are in a bubble instead of menu.


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=146460

[Ben Goodger (Google), 2012-07-12 03:08:27]

LGTM.

We should support dragging out of the overflow and onto the launcher to reorder.

Behavior should be: when I drag out of the overflow, the items on the launcher
move around, when I drop, the last visible item on the launcher is displaced
into the overflow.

[xiyuan, 2012-07-12 16:31:00]

On 2012/07/12 03:08:27, Ben Goodger (Google) wrote:
> LGTM.
> 
> We should support dragging out of the overflow and onto the launcher to
reorder.
> 
> Behavior should be: when I drag out of the overflow, the items on the launcher
> move around, when I drop, the last visible item on the launcher is displaced
> into the overflow.

Yep, this feature is missing from the CL. I'll update the bug and address this
in a follow up CL.

[commit-bot: I haz the power, 2012-07-12 20:03:14]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/xiyuan@chromium.org/10659003/10010

[commit-bot: I haz the power, 2012-07-12 22:10:33]

Change committed as 146460