Cleanup: Update the path to vector2d_f.h header.

Cleanup: Update the path to vector2d_f.h header.

The geometry headers were moved from /ui/gfx/ to ui/gfx/geometry, so
we are updating the include paths to fix this.

BUG=395370
TEST=gfx_unittests
TBR=sky@chromium.org,danakj@chromium.org

Committed: https://crrev.com/b486216287a3e1f30e81f70444f889d321b7819a
Cr-Commit-Position: refs/heads/master@{#306960}

[tfarina, 2014-12-05 01:16:36]

TBRing...

[tfarina, 2014-12-05 01:16:40]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2014-12-05 01:17:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/781863004/1

[commit-bot: I haz the power, 2014-12-05 02:17:25]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-05 02:18:12]

Patchset 1 (id:??) landed as
https://crrev.com/b486216287a3e1f30e81f70444f889d321b7819a
Cr-Commit-Position: refs/heads/master@{#306960}

[samli, 2014-12-05 03:07:34]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/771283003/ by samli@chromium.org.

The reason for reverting is: Breaks Win8 GN and Win8 GN(dbg) builders.

[samli, 2014-12-05 06:38:01]

samli@chromium.org changed reviewers:
+ samli@chromium.org

[samli, 2014-12-05 06:38:01]

This wasn't the issue. Feel free to Ireland, was unsure if this is dependent on
the other patch.