Implement the deference operator for scoped_refptr.

Implement the deference operator for scoped_refptr.

scoped_refptr previously got this for free since it implemented operator
T*, but the conversion operator is being removed. This prevents awkward
looking code like *my_favorite_pointer.get().

BUG=110610
Committed: https://crrev.com/4c2962cc5cf4301154bf475434b1400432c77527
Cr-Commit-Position: refs/heads/master@{#291869}

[dcheng, 2014-08-26 02:02:47]

dcheng@chromium.org changed reviewers:
+ willchan@chromium.org

[dcheng, 2014-08-26 02:02:47]

Unfortunately, quite a few scoped_refptr<> cleanup CLs have already landed that
do *x.get(), so there will have to be a cleanup pass for those as well.

Sigh.

[willchan no longer on Chromium, 2014-08-26 02:42:24]

LGTM

[dcheng, 2014-08-26 03:52:02]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-08-26 03:52:54]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dcheng@chromium.org/505943002/1

[commit-bot: I haz the power, 2014-08-26 05:57:04]

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

[commit-bot: I haz the power, 2014-08-26 06:46:17]

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

[commit-bot: I haz the power, 2014-08-26 06:46:18]

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...)

[dcheng, 2014-08-26 07:13:14]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-08-26 07:13:45]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dcheng@chromium.org/505943002/1

[commit-bot: I haz the power, 2014-08-26 07:43:34]

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, 2014-08-26 08:08:33]

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

[commit-bot: I haz the power, 2014-08-26 08:08:34]

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...)

[dcheng, 2014-08-26 08:18:08]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-08-26 08:19:35]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dcheng@chromium.org/505943002/1

[commit-bot: I haz the power, 2014-08-26 08:37:46]

Committed patchset #1 (1) as 71b93c14eff7ee9a58997fad294cea8a3b7459b1

[commit-bot: I haz the power, 2014-09-10 02:41:30]

Patchset 1 (id:??) landed as
https://crrev.com/4c2962cc5cf4301154bf475434b1400432c77527
Cr-Commit-Position: refs/heads/master@{#291869}