Unit tests currently output basic hex dumps of skia objects even though we have ostream operators for many of the common ones. It looks like the operators were created in the wrong namespace (flutter/testing rather than the std namespace). Changing the namespace for the associated `assertions_skia` source files makes them compatible with unit tests that deal with these objects provided that the test files include that header and gn dependency, as verified with the `display_list_unittests` here.
* Revert "Revert "Reland layer state stack" (#37178)"
This reverts commit 21cc000359d8a4da097e8849e83dcbe8ac941e01.
* fix double-transform rendering issues in #114359
* adjust recently added unit test to state_stack APIs
* introduce LSS delegates to simplify some code and reduce overhead
* Fix ShellTest.OnServiceProtocolEstimateRasterCacheMemoryWorks
* add unit test for tracker.setTransform(4x4) and fix bug
* fix culling issue in LayerTree::Flatten
* Revert "Add flow test fixtures and tests (#13986)"
This reverts commit 32915132bacdfd0d631421b23bb6a6d5db1095ab.
* Revert "Dynamically determine whether to use offscreen surface based on need (#13976)"
This reverts commit a13401ce86b3019c39154d56644b7b9eb4a5bbe5.
