cc: Remove low-res-tiling flag from PictureLayerImpl.

It was added when gpu rasterization flag used to be on 
PictureLayerImpl. The gpu rasterization flag has moved to 
LTHI. So this flag can be replaced by a LTHI member function.

BUG=367200

Review URL: https://codereview.chromium.org/296853004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272139 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 44f3985..05ddaab 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -276,6 +276,9 @@
   TileManager* tile_manager() { return tile_manager_.get(); }
   void SetUseGpuRasterization(bool use_gpu);
   bool use_gpu_rasterization() const { return use_gpu_rasterization_; }
+  bool create_low_res_tiling() const {
+    return settings_.create_low_res_tiling && !use_gpu_rasterization_;
+  }
   ResourcePool* resource_pool() { return resource_pool_.get(); }
   Renderer* renderer() { return renderer_.get(); }
   const RendererCapabilitiesImpl& GetRendererCapabilities() const;