mac: Load cursor images from resource pak file instead of from the bundle.

Depends on https://bugs.webkit.org/show_bug.cgi?id=92148

Also, while I'm here, don't include the webkit .cur files on
platforms other than windows.

BUG=137588
TEST=Cursors show up fine in component builds.

Review URL: https://chromiumcodereview.appspot.com/10817031

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148290 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed