Remove SkTileGrid (except for TileGridInfo).

src/core/SkBBHFactory.cpp

Index: src/core/SkBBHFactory.cpp
diff --git a/src/core/SkBBHFactory.cpp b/src/core/SkBBHFactory.cpp
index 4b9ae558e2c4317c077620cb3ece471c28513382..ce5026ca7032f669af960bb7bc8874841c66d23f 100644
--- a/src/core/SkBBHFactory.cpp
+++ b/src/core/SkBBHFactory.cpp
@@ -7,27 +7,8 @@
 
 #include "SkBBHFactory.h"
 #include "SkRTree.h"
-#include "SkTileGrid.h"
 
 SkBBoxHierarchy* SkRTreeFactory::operator()(const SkRect& bounds) const {
     SkScalar aspectRatio = bounds.width() / bounds.height();
     return SkNEW_ARGS(SkRTree, (aspectRatio));
 }
-
-SkBBoxHierarchy* SkTileGridFactory::operator()(const SkRect& bounds) const {
-    SkASSERT(fInfo.fMargin.width() >= 0);
-    SkASSERT(fInfo.fMargin.height() >= 0);
-
-    // We want a conservative answer for the size...
-    const SkIRect ibounds = bounds.roundOut();
-    const int width = ibounds.width();
-    const int height = ibounds.height();
-
-    // Note: SkIRects are non-inclusive of the right() column and bottom() row.
-    // For example, an SkIRect at 0,0 with a size of (1,1) will only have
-    // content at pixel (0,0) and will report left=0 and right=1, hence the
-    // "-1"s below.
-    int xTileCount = (width + fInfo.fTileInterval.width() - 1) / fInfo.fTileInterval.width();
-    int yTileCount = (height + fInfo.fTileInterval.height() - 1) / fInfo.fTileInterval.height();
-    return SkNEW_ARGS(SkTileGrid, (xTileCount, yTileCount, fInfo));
-}