We no longer offer mojo handles via this mechanism.

Remove DartConverter specializations for enums. Tonic provides a partial specialization for all enums. (#3160)

This patch removes the use of the host messages mojom and switch all
message routing over to platform messages.

Previously we had a mix of the two.

The function we were using to initialize this NSString assumed that our
UTF-8 data was null-terminated, which wasn't a valid assumption.

Fixes https://github.com/flutter/flutter/issues/6359

Add plunbing for Host-to-Dart platform messages

We'll use the plumbing in this direction for things like key events.

To make the default state all zeros.

Fixes https://github.com/flutter/flutter/issues/6236

I meant to compare these values, not assign them.

The Skia team tells us that these go faster.

The PlatformPlugin is the first of the built-in plugins that will replace the
mojom platform services.

After this patch, platform messages now take the same path through the system
that semantics data does (on Android). Support on iOS will be in another patch.

Previously the Dart entry points weren't wired up.

This fixes this Fuchsia build, which uses the latest //lib/ftl.

This transport uses the Dart and JNI APIs directly instead of indirecting
through Mojo.

This patch moves the rest of the clients to use the new PointerData
transport.

This patch prepares us to switch sending semantics information over mojom to
using dart:ui directly. Currently the recorded information is dropped on the
floor, but that will improve in future patches.

Example: $ mojo:launcher mojo:spinning_square

We now use JNI rather than Mojo to transport pointer data from Java to Dart.
Also, fill in a few more of the pointer data fields from information in Java.

The UI thread does not have an EGL context, so attempting to delete an
SkImage on that thread will fail to delete the image's texture, resulting
in resource leaks

Fixes https://github.com/flutter/flutter/issues/5783

Long live pointer data packets.

Previously we got some punctuation wrong.

Rather than using mojom to encode pointer data, we now encode and decode it
manually. A future patch will remove the mojom codepath once the framework is
updated.

See https://github.com/flutter/flutter/issues/4478

Sometimes it is convenient to construct a color from an opacity rather than an
alpha value.

Fixes https://github.com/flutter/flutter/issues/5205

Apparently Skia would like to remove these enum values.

Fixes https://github.com/flutter/flutter/issues/5912

This patch makes three API changes:

 * The dart:ui library now always communicates in physical pixels. The
   framework is responsible for converting to whatever logical coordinate
   system it wishes to use.
 * The textBaselien property is now on TextStyle rather than ParagraphStyle,
   which will let us choose which baseline to use on a per-span basis rather
   than on a per-paragraph basis.
 * This patch also removes the old MojoServices function endpoints.

Fixes https://github.com/flutter/flutter/issues/3779
Fixes https://github.com/flutter/flutter/issues/1360

Also, with the comments.

We were off by one on, uh, everything.

* Added drawArc to Canvas.

Added a way to call SkCanvas::drawArc from Dart. This method is
optimized for the arc case and should be faster that drawing paths.

* Removed implementation details from docs.

* Added more details to the docs.