Remove old repaint rect tracking from FrameView.

Remove old repaint rect tracking from FrameView.

This code only worked when we weren't using FCM mode, but now we always do for
tests. We also always run tests with asserts turned on, even for release builds
so this code clearly is never used since it contains a
RELEASE_ASSERT_NOT_REACHED().

Lets remove it!

I also removed the old baselines from tests that used this. These tests must all
be disabled on the platforms where these baselines would have been used since we
no longer were capable of producing this output without crashing on the
ASSERT_NOT_REACHED().

BUG=368518, 521692
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201928

[esprehn, 2015-09-05 02:07:38]

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

[commit-bot: I haz the power, 2015-09-05 02:07:47]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1309243006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1309243006/1

[commit-bot: I haz the power, 2015-09-05 03:24:29]

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

[commit-bot: I haz the power, 2015-09-05 03:24:29]

Dry run: This issue passed the CQ dry run.

[esprehn, 2015-09-05 05:57:50]

esprehn@chromium.org changed reviewers:
+ dglazkov@chromium.org, enne@chromium.org, pdr@chromium.org

[esprehn, 2015-09-08 16:52:01]

Ping

[dglazkov, 2015-09-08 17:39:45]

lgtm

[esprehn, 2015-09-08 18:53:46]

The CQ bit was checked by esprehn@chromium.org

[commit-bot: I haz the power, 2015-09-08 18:53:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1309243006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1309243006/1

[commit-bot: I haz the power, 2015-09-08 20:04:16]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201928