Remove webkit dependency in grit_rule.

Remove webkit dependency in grit_rule.

We needed to set a grit define to build the blink_resources target
properly. We were doing this via a global define that affected all
targets, but now we're doing this with a local define instead.

R=rtoy@chromium.org
BUG=

Committed: https://crrev.com/4be705ba5d1d13fbb1c5d2f4f578273f13ed632c
Cr-Commit-Position: refs/heads/master@{#348812}

[Dirk Pranke, 2015-09-14 22:33:11]

This patch depends on a blink-side CL landing first:

https://codereview.chromium.org/1338993008/

and rolling into chromium before this can land.

[brettw, 2015-09-14 22:53:53]

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

[brettw, 2015-09-14 22:53:53]

lgtm

[Raymond Toy, 2015-09-14 22:55:58]

lgtm

[Dirk Pranke, 2015-09-15 00:57:18]

The CQ bit was checked by dpranke@chromium.org

[commit-bot: I haz the power, 2015-09-15 00:58:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1338193003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1338193003/1

[commit-bot: I haz the power, 2015-09-15 01:45:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-15 01:46:38]

Patchset 1 (id:??) landed as
https://crrev.com/4be705ba5d1d13fbb1c5d2f4f578273f13ed632c
Cr-Commit-Position: refs/heads/master@{#348812}

[kjellander_chromium, 2015-09-15 06:15:23]

On 2015/09/15 01:46:38, commit-bot: I haz the power wrote:
> Patchset 1 (id:??) landed as
> https://crrev.com/4be705ba5d1d13fbb1c5d2f4f578273f13ed632c
> Cr-Commit-Position: refs/heads/master@{#348812}

Thanks for this! We still haven't managed to roll the other one into WebRTC, so
now we can just skip the WebKit part for now.

[commit-bot: I haz the power, 2015-09-23 12:41:17]

Patchset 1 (id:??) landed as
https://crrev.com/4be705ba5d1d13fbb1c5d2f4f578273f13ed632c
Cr-Commit-Position: refs/heads/master@{#348812}