cc: Give TilingData back a Size instead of a Rect.

cc/resources/picture_layer_tiling_unittest.cc

Index: cc/resources/picture_layer_tiling_unittest.cc
diff --git a/cc/resources/picture_layer_tiling_unittest.cc b/cc/resources/picture_layer_tiling_unittest.cc
index 96862ec3118b828cf909f603e4d22e4822bc8b7d..86f60ac877309014e4acd2c4cbf4ac7231ec5ee7 100644
--- a/cc/resources/picture_layer_tiling_unittest.cc
+++ b/cc/resources/picture_layer_tiling_unittest.cc
@@ -172,7 +172,7 @@ class PictureLayerTilingIteratorTest : public testing::Test {
                                         const gfx::Rect& dest_rect) {
     float dest_to_contents_scale = tiling_->contents_scale() / rect_scale;
     gfx::Rect clamped_rect = gfx::ScaleToEnclosingRect(
-        tiling_->TilingRect(), 1.f / dest_to_contents_scale);
+        gfx::Rect(tiling_->tiling_size()), 1.f / dest_to_contents_scale);
     clamped_rect.Intersect(dest_rect);
     VerifyTilesExactlyCoverRect(rect_scale, dest_rect, clamped_rect);
   }