This reverts commit 2e10a974.

This reverts commit 6a2df7f1.

This patch applies the following changes:

* Rename a stray .cc file to .mm (connection_collection.cc).
* Migrate Objective-C #includes to #import as per the style guide.
* #include/#import order updated to reflect the style guide order:
  associated header, system/standard library headers, library headers,
  platform-specific includes.
* Include cstring where we're using strlen.
* Add a missing copyright header in SemanticsObjectTest.mm.

Bugs: https://github.com/flutter/flutter/issues/60025

This is part of a larger effort to expose the difference between GrDirectContext,
which runs on the GPU thread and can directly perform operations like uploading
textures, and GrRecordingContext, which can only queue up work to be delivered
to the GrDirectContext later.

Use bilinear instead of nearest filter to draw surface texture

Related Issues:
https://github.com/flutter/flutter/issues/53080

Tests:
- TextureLayerTest

Fixes https://github.com/flutter/flutter/issues/55783
Requires follow-up https://github.com/flutter/flutter/issues/55926

If the application says there is a new texture but does not provide one, reuse the last texture. (#17437)

This matches the behavior of the OpenGL backend.