Remove WebElement::hasTagName.

Remove WebElement::hasTagName.

There are no callsites in Chromium.  This function is unsafe because it
ignores namespace URI.

BUG=

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=176895

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=177049

[tkent, 2014-06-25 00:17:00]

Would you review this please?

[Ilya Sherman, 2014-06-25 01:38:24]

LGTM.  Thanks! :)

[tkent, 2014-06-25 01:47:59]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2014-06-25 01:48:49]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tkent@chromium.org/354763002/1

[commit-bot: I haz the power, 2014-06-25 01:51:48]

Change committed as 176895

[tkent, 2014-06-25 04:07:31]

A revert of this CL has been created in
https://codereview.chromium.org/350433004/ by tkent@chromium.org.

The reason for reverting is: Broke Android build.
.

[tkent, 2014-06-25 04:11:15]

On 2014/06/25 04:07:31, tkent wrote:
> A revert of this CL has been created in
> https://codereview.chromium.org/350433004/ by mailto:tkent@chromium.org.
> 
> The reason for reverting is: Broke Android build.
> .

This is just a DEPS issue.  I'll re-land later.

[tkent, 2014-06-27 02:59:03]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2014-06-27 03:00:35]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tkent@chromium.org/354763002/1

[commit-bot: I haz the power, 2014-06-27 03:03:06]

Change committed as 177049