Prepare RFHM for disabling swapped out state.

Prepare RFHM for disabling swapped out state.

This CL ensures that RenderFrameHostManager doesn't create swapped out
RenderViewHosts when swapped out state is disabled. It should be creating
proxy objects instead.

BUG=357747
Committed: https://crrev.com/56cd49d9f09779ac96a4885c09e3d9697c5c15bf
Cr-Commit-Position: refs/heads/master@{#348688}

[nasko, 2015-09-14 17:06:49]

nasko@chromium.org changed reviewers:
+ alexmos@chromium.org

[nasko, 2015-09-14 17:06:49]

Hey Alex,
There is one codepath that needs to be fixed to create proxies instead of
swapped out RVHs. This CL fixes this. Can you review it for me?
Thanks in advance!
Nasko

[alexmos, 2015-09-14 17:38:50]

LGTM

[nasko, 2015-09-14 18:14:22]

The CQ bit was checked by nasko@chromium.org

[commit-bot: I haz the power, 2015-09-14 18:16:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1341003002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1341003002/1

[commit-bot: I haz the power, 2015-09-14 19:52:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-14 19:52:53]

Patchset 1 (id:??) landed as
https://crrev.com/56cd49d9f09779ac96a4885c09e3d9697c5c15bf
Cr-Commit-Position: refs/heads/master@{#348688}

[commit-bot: I haz the power, 2015-09-23 12:36:00]

Patchset 1 (id:??) landed as
https://crrev.com/56cd49d9f09779ac96a4885c09e3d9697c5c15bf
Cr-Commit-Position: refs/heads/master@{#348688}