Revert of Remove /resources/ from a vector_icon.h include to fix Google Chrome Mac compile

Revert of Remove /resources/ from a vector_icon.h include to fix Google Chrome Mac compile (patchset #1 id:1 of https://codereview.chromium.org/2659133002/ )

Reason for revert:
Compile error on GPU Mac Builder: ../../ui/views/style/platform_style_mac.mm:15:10: fatal error: 'ui/views/vector_icons/vector_icons.h' file not found

Original issue's description:
> Remove /resources/ from a vector_icon.h include to fix Google Chrome Mac compile
> 
> TBR=estade@chromium.org
> BUG=684911
> NOTRY=true
> NOTREECHECKS=true
> NOPRESUBMIT=true
> 
> Review-Url: https://codereview.chromium.org/2659133002
> Cr-Commit-Position: refs/heads/master@{#446785}
> Committed: https://chromium.googlesource.com/chromium/src/+/bc2e9b86da06f3f673ff175001e8b886500102b2

TBR=estade@chromium.org,dbeam@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=684911

[mdjones, 2017-01-27 22:15:21]

The CQ bit was checked by mdjones@chromium.org

[mdjones, 2017-01-27 22:15:21]

Created Revert of Remove /resources/ from a vector_icon.h include to fix Google
Chrome Mac compile

[mdjones, 2017-01-27 22:16:28]

The CQ bit was unchecked by mdjones@chromium.org

[commit-bot: I haz the power, 2017-01-27 22:16:30]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...