Removed spaces, fixed local storage mechanism for first time visit

Removed spaces, fixed local storage mechanism for first time visit.

Cleaned up a couple of spaces and also make sure the local storage
mechanism handles first time visits by checking for null instead of 'undefined'
since localStorage.getItem(key) returns null when it cannot find the key[1]. 

[1]http://www.w3.org/TR/webstorage/#dom-storage-getitem

BUG=NONE
TEST=Manual, setup P2P call
NOTRY=TRUE

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=282939

[jansson, 2014-07-14 09:57:57]

Could you perform a wee code review? 

Just cleaned up a couple of spaces and also make sure the local storage
mechanism handles first time visits by checking for null instead of 'undefined'
since localStorage.getItem(key) return null when it cannot find the item. Might
have returned 'undefined' at some point......

Since kjellander and phoglund are on vacation I thought to give you the honors
;) More to come......

[mcasas, 2014-07-14 12:50:13]

LGTM with nit:

The description of the change should go in the CL description, not in the review
request. Also, please quote [1].

[1] http://www.w3.org/TR/webstorage/#dom-storage-getitem

[jansson, 2014-07-14 12:59:39]

On 2014/07/14 12:50:13, mcasas wrote:
> LGTM with nit:
> 
> The description of the change should go in the CL description, not in the
review
> request. Also, please quote [1].
> 
> [1] http://www.w3.org/TR/webstorage/#dom-storage-getitem

Done!

[jansson, 2014-07-14 12:59:53]

The CQ bit was checked by jansson@chromium.org

[commit-bot: I haz the power, 2014-07-14 13:01:08]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jansson@chromium.org/384353002/1

[commit-bot: I haz the power, 2014-07-14 13:02:15]

Change committed as 282939