Do not present poof animation while drag & drop a bookmark in the chevron-menu.

Do not present poof animation while drag & drop a bookmark in the chevron-menu.

For offTheSideButton, animation was always enabled regardless of nodeMoved/
nodeRemoved. Enable animation only when it is called from -nodeRemoved:,
decided by 'animate' parameter.

BUG=60628
R=asvitkine@chromium.org

TEST=
1. Launch chrome and add more bookmarks and folders so that chevron is seen.
2. Drag and adjust items so that there is atleast one folder and one or more bookmarks under chevron.
3. Drag a bookmark(within chevron) and drop it under the folder(within chevron) and observe.
4. There should be no poof animation/sound presented to see/hear.

Committed: https://crrev.com/67f01ddf1bc44927cbe10bcc000bf8eec462c1fc
Cr-Commit-Position: refs/heads/master@{#297105}

[Gaja, 2014-09-24 06:15:27]

@asvitkine
PTAL.

[Gaja, 2014-09-25 17:54:38]

On 2014/09/24 06:15:27, Gajendra N wrote:
> @asvitkine
> PTAL.

PTAL.

[Alexei Svitkine (slow), 2014-09-26 15:05:47]

lgtm

[Gaja, 2014-09-27 05:00:12]

The CQ bit was checked by gajendra.n@samsung.com

[commit-bot: I haz the power, 2014-09-27 05:00:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/599793002/1

[commit-bot: I haz the power, 2014-09-27 05:49:47]

Committed patchset #1 (id:1) as 3a558f26eca26423cf59dfc7e6779e882436b100

[commit-bot: I haz the power, 2014-09-27 05:50:24]

Patchset 1 (id:??) landed as
https://crrev.com/67f01ddf1bc44927cbe10bcc000bf8eec462c1fc
Cr-Commit-Position: refs/heads/master@{#297105}