Fix WeakPtrFactory member ordering in components

Fix WeakPtrFactory member ordering in components

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/574b801fe54f36919a49c9f5c90b11ce20e880f0
Cr-Commit-Position: refs/heads/master@{#305227}

[MRV, 2014-11-20 14:30:13]

mohan.reddy@samsung.com changed reviewers:
+ blundell@chromium.org

[MRV, 2014-11-20 14:31:07]

On 2014/11/20 14:30:13, MRV wrote:
> mailto:mohan.reddy@samsung.com changed reviewers:
> + mailto:blundell@chromium.org

PTAL

[blundell, 2014-11-21 15:32:46]

lgtm

[MRV, 2014-11-21 15:33:30]

The CQ bit was checked by mohan.reddy@samsung.com

[MRV, 2014-11-21 15:33:45]

On 2014/11/21 15:32:46, blundell wrote:
> lgtm

Thanks mr. blundell for LGTM

[commit-bot: I haz the power, 2014-11-21 15:33:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/738313003/1

[commit-bot: I haz the power, 2014-11-21 16:44:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-21 16:45:43]

Patchset 1 (id:??) landed as
https://crrev.com/574b801fe54f36919a49c9f5c90b11ce20e880f0
Cr-Commit-Position: refs/heads/master@{#305227}