Fix WeakPtrFactory member ordering in device

Fix WeakPtrFactory member ordering in device
Changing in the intialization order of WeakPtrFactory such that all
member variables should appear before the WeakPtrFactory to ensure
that any WeakPtrs to Controller are invalidated before its members
variable's destructors are executed, rendering them invalid.

BUG=303818
Committed: https://crrev.com/bead29c2ec344697c4938a2296b015a39f65a000
Cr-Commit-Position: refs/heads/master@{#308090}

[anujsharma, 2014-12-11 09:52:51]

anujk.sharma@samsung.com changed reviewers:
+ rockot@chromium.org

[anujsharma, 2014-12-11 09:52:52]

PTAL

[Ken Rockot(use gerrit already), 2014-12-12 02:12:31]

lgtm

[anujsharma, 2014-12-12 02:48:17]

On 2014/12/12 02:12:31, Ken Rockot wrote:
> lgtm

Thanks Ken Rockot for lgtm.

[anujsharma, 2014-12-12 02:48:34]

The CQ bit was checked by anujk.sharma@samsung.com

[commit-bot: I haz the power, 2014-12-12 02:50:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/791743006/1

[anujsharma, 2014-12-12 02:52:10]

The CQ bit was unchecked by anujk.sharma@samsung.com

[anujsharma, 2014-12-12 02:52:10]

The CQ bit was checked by anujk.sharma@samsung.com

[anujsharma, 2014-12-12 02:52:12]

The CQ bit was unchecked by anujk.sharma@samsung.com

[anujsharma, 2014-12-12 02:57:49]

@Ken Rockot,

I marked the commit but came to know Dmichael has also submitted almost the same
CL https://codereview.chromium.org/780713002/.
Hence, i am unmarking my commit. Sorry for the confusion and thanks for your
valuable time for review.

@Dmichael, 
I have seen your ccd CL, since you have collected changes from every area, i
feel my change should not give you
rebase problem. Hence, i am unmarking my commit. Thanks for making it up and
sorry for the confusion.

[dmichael (off chromium), 2014-12-12 15:54:32]

The CQ bit was checked by dmichael@chromium.org

[dmichael (off chromium), 2014-12-12 15:55:20]

It should be really easy for me to merge; we can land this one. I hit the CQ
button again (and lgtm too)

[commit-bot: I haz the power, 2014-12-12 15:55:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/791743006/1

[commit-bot: I haz the power, 2014-12-12 15:56:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-12 15:57:21]

Patchset 1 (id:??) landed as
https://crrev.com/bead29c2ec344697c4938a2296b015a39f65a000
Cr-Commit-Position: refs/heads/master@{#308090}