[turbofan] Remove obsolete unique.h includes in TurboFan.

[turbofan] Remove obsolete unique.h includes in TurboFan.

Now that it is no longer needed, this also removes the invalid inclusion
of "object-inl.h" within the "unique.h" header file.

Note that this change still leaves 2 violations of that rule in the
code, checked with the "tools/check-inline-includes.sh" tool.

R=bmeurer@chromium.org

Committed: https://crrev.com/c87bd340af676b81aa00288420868ce22b0990f2
Cr-Commit-Position: refs/heads/master@{#30503}

[Michael Starzinger, 2015-08-31 17:09:50]

https://codereview.chromium.org/1321223002/diff/1/src/unique.h
File src/unique.h (left):

https://codereview.chromium.org/1321223002/diff/1/src/unique.h#oldcode12
src/unique.h:12: #include "src/objects-inl.h"  // TODO(everyone): Fix our inl.h
crap
Please appreciate this part of the change. :)

[Benedikt Meurer, 2015-08-31 19:06:34]

LGTM! Ship it!

https://codereview.chromium.org/1321223002/diff/1/src/unique.h
File src/unique.h (left):

https://codereview.chromium.org/1321223002/diff/1/src/unique.h#oldcode12
src/unique.h:12: #include "src/objects-inl.h"  // TODO(everyone): Fix our inl.h
crap
Appreciated!

[Michael Starzinger, 2015-09-01 10:28:52]

The CQ bit was checked by mstarzinger@chromium.org

[Michael Starzinger, 2015-09-01 10:28:52]

The patchset sent to the CQ was uploaded after l-g-t-m from bmeurer@chromium.org
Link to the patchset: https://codereview.chromium.org/1321223002/#ps20001
(title: "Rebased.")

[commit-bot: I haz the power, 2015-09-01 10:29:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1321223002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1321223002/20001

[commit-bot: I haz the power, 2015-09-01 10:30:44]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-09-01 10:31:06]

Patchset 2 (id:??) landed as
https://crrev.com/c87bd340af676b81aa00288420868ce22b0990f2
Cr-Commit-Position: refs/heads/master@{#30503}