Just adding some more details to the snippets README.md file about testing snippets.

Add code example for CustomScrollView on how to make it grow in two directions along its scroll axis (#57670)

* Have _warpToCurrentIndex() shortcut logic behave properly

* Add test

* Apply code review

* Fix typo (fromm -> from)

Re-adds a line that was accidentally removed in #57515

Co-authored-by: Jenn Magder <magder@google.com>

This reverts commit 602d8baf.

* move pending timers list code out of assert

* style change
Co-authored-by: Emmanuel Garcia <egarciad@google.com>

* add unit tests

* formatting

* pending timer test

* pending timer assertion test

* add setup and teardown
Co-authored-by: Emmanuel Garcia <egarciad@google.com>

Reland: #56167

 For files larger than 250 KB (roughly the size of framework.dart), chunk the conversion. This may be important for large assets like images.

The Linux CMakeLists.txt are intended to be compatible with 3.10, but
accedintally used a list construct that wasn't added until 3.12. This
adds a custom replacement function.

This makes the build compatible with 3.10 as originally intended.