Move mac_views_browser grit define out of tools/grit.

tools/grit used to add it, but it should move to chrome_grit_defines
instead to avoid a ui dependency there. It's currently breaking WebRTC.

It's currently used by chrome/app/theme/theme_resources.grd.

(ui_resources.grd might need it later, but it doesn't right now).

BUG=657244
TBR=scottmg@chromium.org, sky@chromium.org

Review-Url: https://codereview.chromium.org/2535753007
Cr-Original-Commit-Position: refs/heads/master@{#435582}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 6992f1f07971bf7f2100b6538cf302d8556124ec
1 file changed