Cleanup: Update the paths to gfx vector2d_conversions.h include.

Cleanup: Update the paths to gfx vector2d_conversions.h include.

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=None
TBR=ben@chromium.org,danakj@chromium.org

Committed: https://crrev.com/6d5dba5660affdd0b863db01bffdf22a62b9d67e
Cr-Commit-Position: refs/heads/master@{#301035}

[tfarina, 2014-10-24 01:46:06]

TBRing...

[tfarina, 2014-10-24 01:46:13]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2014-10-24 01:48:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/669153008/1

[commit-bot: I haz the power, 2014-10-24 02:03:06]

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

[commit-bot: I haz the power, 2014-10-24 02:03:06]

Try jobs failed on following builders:
  linux_gpu on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/linux_gpu/builds/...)
  linux_chromium_gn_dbg on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[tfarina, 2014-10-24 02:39:03]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2014-10-24 02:39:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/669153008/1

[commit-bot: I haz the power, 2014-10-24 03:48:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-24 03:49:52]

Patchset 1 (id:??) landed as
https://crrev.com/6d5dba5660affdd0b863db01bffdf22a62b9d67e
Cr-Commit-Position: refs/heads/master@{#301035}