Fix iOS build

Support loading of custom fonts

Remove Dart entry point for ServiceRegistry

We don't use this entry point anymore.

Flutter.mojo should support multiple views

Each view gets its own Dart isolate. Unfortunately, the ShellPtr is a unique
resource, which means we need to proxy an implementation of Shell to each view.
In the future, we should probably switch dart to expect an ApplicationConnector
rather than a Shell.

Remove ServiceRegistry

We don't need this anymore now that we have Mozart.

Make the buildbot generate an archive for the dynamic services SDK

Move ganesh_canvas to sky/shell/gpu/direct/

The FLX will contain a font manifest JSON file that maps font family names
to custom font assets.  Flutter will provide a FontSelector that loads
fonts on demand and caches typeface and style data.

We only use the ganesh canvas in the direct configuration. This patch moves the
class into the directory to make that clear.

Attach a stencil buffer

Skia can go faster (and crashes less) when we have a stencil buffer.

Fixes https://github.com/flutter/flutter/issues/1931

Make iOS keyboard robust to selection of -1

The Dart code uses -1 to signal that there is no current selection. If
we get text input in this state, we need to do something reasonable.
This patch teach us to treat that case as if the selection was zero.

This patch also improves how we convert from NSString to string16 and
makes it so we don't leak keyboard subviews.

Fixes https://github.com/flutter/flutter/issues/1878

Add a toString to ui.Image

Fixes #1866

Remove reference to non-existent directory

This was breaking the build with gcm enabled.

Remove dart:ui_internals

This patch merges these functions into dart:ui, which is simpler.

Fixes #83

Remove gcm package from the repository.

Update Dart

Add an off-by-default flag for background compilation

iOS: Add a native service asset copy phase to move the service dylibs resolved by the tooling into the appropriate locations in the application bundle

I moved it to https://github.com/mpcomplete/flutter_gcm for now.

iOS: Add a native service asset copy phase to move the service dylibs resolved by the tooling into the appropriate locations in the application bundle

Use Engine::RunFromBundle and the ZipAssetBundle on all platforms

We don't appear to need this DEPS entry to build.