liyuqian daf4447a2e
Reland "Allow raster caching any layer subtree (#6442)" (#6507)
* Revert "Revert "Allow raster caching any layer subtree (#6442)" (#6506)"

This reverts commit c6e6da512a54c1bb33a584b117bcf300ce71b166.

* Use raw pointer for RasterCacheKey

So we won't depend on whether it's a std::unique_ptr or std::shared_ptr.
2018-10-11 15:09:09 -07:00
..