Remove surface_id from RenderWidget/RenderWidgetHost and friends

Remove surface_id from RenderWidget/RenderWidgetHost and friends

We don't need them any more.

BUG=487471
Committed: https://crrev.com/5d36daebe789988bc73b35d122c5401d79d8f322
Cr-Commit-Position: refs/heads/master@{#350686}

[piman, 2015-09-23 06:37:23]

piman@chromium.org changed reviewers:
+ dcheng@chromium.org, sievers@chromium.org

[piman, 2015-09-23 06:37:23]

sievers: please review
dcheng: OWNERS for *_messages.h

[dcheng, 2015-09-23 21:03:40]

lgtm

[no sievers, 2015-09-23 22:00:16]

LGTM

[piman, 2015-09-23 23:38:05]

The CQ bit was checked by piman@chromium.org

[piman, 2015-09-23 23:38:06]

The patchset sent to the CQ was uploaded after l-g-t-m from
sievers@chromium.org, dcheng@chromium.org
Link to the patchset: https://codereview.chromium.org/1359163005/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2015-09-23 23:41:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1359163005/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1359163005/20001

[commit-bot: I haz the power, 2015-09-24 00:01:01]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-09-24 00:01:02]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[piman, 2015-09-24 21:13:18]

The CQ bit was checked by piman@chromium.org

[piman, 2015-09-24 21:13:18]

The patchset sent to the CQ was uploaded after l-g-t-m from
sievers@chromium.org, dcheng@chromium.org
Link to the patchset: https://codereview.chromium.org/1359163005/#ps60001
(title: "fix more tests")

[commit-bot: I haz the power, 2015-09-24 21:14:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1359163005/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1359163005/60001

[commit-bot: I haz the power, 2015-09-24 22:47:17]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-09-24 22:47:58]

Patchset 4 (id:??) landed as
https://crrev.com/5d36daebe789988bc73b35d122c5401d79d8f322
Cr-Commit-Position: refs/heads/master@{#350686}