cc: Keep tilings texture size in sync

cc/layers/picture_layer_impl.cc

Index: cc/layers/picture_layer_impl.cc
diff --git a/cc/layers/picture_layer_impl.cc b/cc/layers/picture_layer_impl.cc
index 93d658159516549e0164c2e55790fea982a05370..16dcd52d3ecb4aa23d9752f3da14ef675d08fe57 100644
--- a/cc/layers/picture_layer_impl.cc
+++ b/cc/layers/picture_layer_impl.cc
@@ -130,6 +130,7 @@ void PictureLayerImpl::PushPropertiesTo(LayerImpl* base_layer) {
   DCHECK_LE(tilings_->num_tilings(),
             layer_tree_impl()->create_low_res_tiling() ? 2u : 1u);
 
+  layer_impl->set_gpu_raster_max_texture_size(gpu_raster_max_texture_size_);
   layer_impl->UpdateRasterSource(raster_source_, &invalidation_,
                                  tilings_.get());
   DCHECK(invalidation_.IsEmpty());
@@ -685,8 +686,8 @@ gfx::Size PictureLayerImpl::CalculateTileSize(
     // For GPU rasterization, we pick an ideal tile size using the viewport
     // so we don't need any settings. The current approach uses 4 tiles
     // to cover the viewport vertically.
-    int viewport_width = layer_tree_impl()->device_viewport_size().width();
-    int viewport_height = layer_tree_impl()->device_viewport_size().height();
+    int viewport_width = gpu_raster_max_texture_size_.width();
+    int viewport_height = gpu_raster_max_texture_size_.height();
     default_tile_width = viewport_width;
     // Also, increase the height proportionally as the width decreases, and
     // pad by our border texels to make the tiles exactly match the viewport.