Add an unimplemented history API to WebView

Add an unimplemented history API to WebView

This API will function as a temporary shim to enable
history functionality to move to content/renderer, without
any broken intermediate steps.

This is step 1 of 5 from http://crbug.com/357327

BUG=357327
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=170488

[abarth-chromium, 2014-03-27 23:00:46]

lgtm

https://codereview.chromium.org/214723003/diff/1/public/web/WebHistoryCommitT...
File public/web/WebHistoryCommitType.h (right):

https://codereview.chromium.org/214723003/diff/1/public/web/WebHistoryCommitT...
public/web/WebHistoryCommitType.h:15: };
Can you add some comments explaining what each of these mean?

[Nate Chapin, 2014-03-27 23:27:05]

https://codereview.chromium.org/214723003/diff/1/public/web/WebHistoryCommitT...
File public/web/WebHistoryCommitType.h (right):

https://codereview.chromium.org/214723003/diff/1/public/web/WebHistoryCommitT...
public/web/WebHistoryCommitType.h:15: };
On 2014/03/27 23:00:47, abarth wrote:
> Can you add some comments explaining what each of these mean?

Done. 

Please let me know whether they're sufficient.

[Nate Chapin, 2014-03-31 20:42:45]

The CQ bit was checked by japhet@chromium.org

[commit-bot: I haz the power, 2014-03-31 20:43:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/japhet@chromium.org/214723003/20001

[commit-bot: I haz the power, 2014-03-31 21:58:11]

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

[commit-bot: I haz the power, 2014-03-31 21:58:11]

Try jobs failed on following builders:
  tryserver.blink on linux_blink_dbg

[Nate Chapin, 2014-03-31 21:58:31]

The CQ bit was checked by japhet@chromium.org

[commit-bot: I haz the power, 2014-03-31 21:58:40]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/japhet@chromium.org/214723003/20001

[commit-bot: I haz the power, 2014-03-31 23:59:17]

Change committed as 170488