This does not actually import the runners into the engine. It only sets up the targets so they need no modifications are necessary when the migration is done. The engine has been verified to build in both buildroots.

This default is already set in the framework, but this also needs to be
set in the binding layer to preserve the same behavior when the
deprecated framework parameter is removed.

* colormatrix is now 0...1

* reformat

Renaming a brand new and unused parameter due to some discussion about connecting with the framework.

Fixes flutter/flutter#31650

This reverts commit 30fb4a69.

EngineLayers can hold references to Skia objects and may consume significant
resources.  This change will result in more aggressive cleanup of EngineLayers
by the Dart GC.

See https://github.com/flutter/flutter/issues/31303

Skia allows drawing unpremul images, but filtering them can look bad.
Internally Skia performs this transformation when creating SkImages from
encoded data (so this already happens for MakeCrossContextFromEncoded),
and for consistency/quality it should be done here, too.

Fixes #28785

Also throw if SkVertices::Builder reports an invalid configuration.

Fixes https://github.com/flutter/flutter/issues/31270

* Revert "fix toString (#8688)"

This reverts commit 9fa73367.

* Revert "Make Rect and RRect use 64 bit doubles, and make them const-able (#8565)"

This reverts commit c1231527.

* Make Rect and RRect 64bit and const-able

Fixes https://github.com/flutter/flutter/issues/31292.

Calculate and expose paragraph tightWidth to the framework to allow drawing Text based on this.

This follows our namespace change from shell to flutter: https://github.com/flutter/engine/pull/8520.

This is the first step in making Flutter aware of and responsive to Z
bound overflow. On its own this patch shouldn't result in any changes in
behavior. This will need to be followed up with a patch in Fuchsia's
Flutter runner to set the Z bounds after this lands, and another patch
in the engine actually implementing the desired overflow behavior.

This Z bound info is routed through the engine itself to make sure the
bounds in flow are truly consistent from the Fuchsia runner. However
these values should eventually be exposed to the framework as well.

* Revert "Fix versions implementation (#7726)"

This reverts commit 3c38dd34.

* Revert "Expose the Flutter engine, Dart and Skia versions to Dart. (#7634)"

This reverts commit b94e759b.

* remove namespace shell stuff

* fix format

* fix licenses

This reverts commit 0b36d3e2.

Some components in the Flutter engine were derived from the forked blink codebase. While the forked components have either been removed or rewritten, the use of the blink namespace has mostly (and inconsistently) remained. This renames the blink namesapce to flutter for consistency. There are no functional changes in this patch.

* switch to newer APIs for shaders and filters

* fix formatting

Adds `Locale.toLanguageTag()`, which returns a valid Unicode Locale Identifier
using underscores as separator that can be reliably parsed.

* Improve path metrics tests and docs

Revert "Revert "Separate the data required to bootstrap the VM into its own class. (#8397)" (#8406)" (#8414)

This reverts commit f7b4903d.

Bug: https://github.com/flutter/flutter/issues/30407

* Pass environment defines to the compiler

* Remove non-strong platform target