Revert of Revert of Cleanup: Update the path to vector2d_f.h header.

Revert of Revert of Cleanup: Update the path to vector2d_f.h header. (patchset #1 id:1 of https://codereview.chromium.org/771283003/)

Reason for revert:
This didn't cause the issue. As noted in https://codereview.chromium.org/781863004/#msg8

Original issue's description:
> Revert of Cleanup: Update the path to vector2d_f.h header. (patchset #1 id:1 of https://codereview.chromium.org/781863004/)
>
> Reason for revert:
> Breaks Win8 GN and Win8 GN(dbg) builders
>
> Original issue's description:
> > 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}
>
> TBR=danakj@chromium.org,sky@chromium.org,tfarina@chromium.org
> NOTREECHECKS=true
> NOTRY=true
> BUG=395370
>
> Committed: https://crrev.com/0dffffd306e8e21bd027b26e947ec8b5ffcdfa51
> Cr-Commit-Position: refs/heads/master@{#306962}

TBR=danakj@chromium.org,sky@chromium.org,samli@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=395370
Committed: https://crrev.com/93bfa91c1957e4618fc3eb52134cf5146898ac84
Cr-Commit-Position: refs/heads/master@{#307020}

[tfarina, 2014-12-05 14:22:34]

Created Revert of Revert of Cleanup: Update the path to vector2d_f.h header.

[commit-bot: I haz the power, 2014-12-05 14:22:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/762063006/1

[commit-bot: I haz the power, 2014-12-05 14:23:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-12-05 14:24:05]

Patchset 1 (id:??) landed as
https://crrev.com/93bfa91c1957e4618fc3eb52134cf5146898ac84
Cr-Commit-Position: refs/heads/master@{#307020}