<webview>: Cleanup

GuestView: Cleanup

This CL uses the new C++11 auto keyword to improve readability of GuestView code. There are two main ways auto is being used in this CL:

1. Iterators. It is verbose to specify the type of an iterator that's fairly self-evident, so we avoid that now.
2. *::From* calls. Some objects are accessible via IDs or some other key. It is self-evident the return type in this case and so it is reasonable to use auto here as well.

BUG=none

Committed: https://crrev.com/4a5c599932ad9f004ad8c62bf71fc812b994797f
Cr-Commit-Position: refs/heads/master@{#312242}

[Fady Samuel, 2015-01-20 15:31:56]

fsamuel@chromium.org changed reviewers:
+ lazyboy@chromium.org

[lazyboy, 2015-01-20 18:20:35]

lgtm

https://chromiumcodereview.appspot.com/857043002/diff/40001/extensions/browse...
File extensions/browser/guest_view/web_view/web_view_guest.cc (right):

https://chromiumcodereview.appspot.com/857043002/diff/40001/extensions/browse...
extensions/browser/guest_view/web_view/web_view_guest.cc:264: auto
guest_site_instance =
This one doesn't fall within the two criteria you mention in the CL desc.

[Fady Samuel, 2015-01-20 18:28:44]

Addressed comment. CQ'ing now.

https://chromiumcodereview.appspot.com/857043002/diff/40001/extensions/browse...
File extensions/browser/guest_view/web_view/web_view_guest.cc (right):

https://chromiumcodereview.appspot.com/857043002/diff/40001/extensions/browse...
extensions/browser/guest_view/web_view/web_view_guest.cc:264: auto
guest_site_instance =
On 2015/01/20 18:20:35, lazyboy wrote:
> This one doesn't fall within the two criteria you mention in the CL desc.

Restored.

[Fady Samuel, 2015-01-20 18:28:48]

The CQ bit was checked by fsamuel@chromium.org

[commit-bot: I haz the power, 2015-01-20 18:30:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/857043002/60001

[commit-bot: I haz the power, 2015-01-20 19:22:22]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-01-20 19:23:28]

Patchset 4 (id:??) landed as
https://crrev.com/4a5c599932ad9f004ad8c62bf71fc812b994797f
Cr-Commit-Position: refs/heads/master@{#312242}