Move protocol registration from WebViewClient to WebFrameClient, part 1/3.

Move protocol registration from WebViewClient to WebFrameClient, part 1/3.

BUG=304341
TEST=protocol registration still works

Committed: https://crrev.com/a23e16b2487eb27949a3e0c9eaf2c20385c7346a
Cr-Commit-Position: refs/heads/master@{#338036}

[Avi (use Gerrit), 2015-07-08 21:41:20]

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

[Avi (use Gerrit), 2015-07-08 21:41:21]

Nasko, here's part 1; it's boring. Part 2 is the fun in Blink.
https://codereview.chromium.org/1226113002/ , but that's not for your review.
Part 3 is boring too.

[nasko, 2015-07-09 12:31:33]

LGTM

[nasko, 2015-07-09 12:31:37]

The CQ bit was checked by nasko@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-07-09 12:31:51]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1228713003/1

[commit-bot: I haz the power, 2015-07-09 13:23:24]

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

[commit-bot: I haz the power, 2015-07-09 13:23:24]

Dry run: This issue passed the CQ dry run.

[Avi (use Gerrit), 2015-07-09 14:13:25]

The CQ bit was checked by avi@chromium.org

[commit-bot: I haz the power, 2015-07-09 14:14:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1228713003/1

[commit-bot: I haz the power, 2015-07-09 14:19:02]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-09 14:20:47]

Patchset 1 (id:??) landed as
https://crrev.com/a23e16b2487eb27949a3e0c9eaf2c20385c7346a
Cr-Commit-Position: refs/heads/master@{#338036}