Improving comment in SkTileGrid::search
Improving comment in SkTileGrid::search

TBR=reed

git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@6828 2bbb7eff-a529-9590-31e7-b0007b416f81

Cue/skia,Cue/skia,Cue/skia,Cue/skia