Drop 'WebURLRequest::setTargetType' from various content/renderer files.

Drop 'WebURLRequest::setTargetType' from various content/renderer files.

'WebURLRequest::TargetType' has been dropped in Blink in favor of
'RequestContext' and 'FrameType', matching the Fetch specification's
changes, and allowing both more granularity in various Blink-side checks
and more clarity around the thing that caused a request, and the frame
that the request affects.

This CL should have zero practical effect, as it's simply hoisting the
translation work that 'WebURLRequest::setTargetType' is already doing
up into the content layer to bring us one step closer to removing the
concept entirely.

BUG=390497
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=285530

[Mike West, 2014-07-21 16:13:09]

Darin, would you mind taking a look at this CL? Perhaps you could recommend
someone to answer the plugin/object question as well?

-mike

[Mike West, 2014-07-23 08:46:09]

Plugin question answered itself in another CL.

Jochen, could you take a look at this?

-mike

[jochen (gone - plz use gerrit), 2014-07-23 09:10:23]

lgtm

[Mike West, 2014-07-23 09:21:23]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-07-23 09:22:20]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mkwst@chromium.org/392333004/40001

[Mike West, 2014-07-23 09:37:07]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-07-23 09:39:01]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mkwst@chromium.org/392333004/60001

[commit-bot: I haz the power, 2014-07-23 14:35:37]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu_triggered...)

[commit-bot: I haz the power, 2014-07-23 15:05:16]

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

[commit-bot: I haz the power, 2014-07-23 15:05:17]

Try jobs failed on following builders:
  win_gpu_triggered_tests on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu_triggered...)

[Mike West, 2014-07-25 08:31:25]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2014-07-25 08:33:01]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mkwst@chromium.org/392333004/60001

[commit-bot: I haz the power, 2014-07-25 08:35:04]

Change committed as 285530