Fixes https://github.com/flutter/flutter/issues/57603

* Add PlatformView support for Fuchsia

This change allows embedding views provided by fuchsia components into
a flutter app running on Fuchsia. This conforms to Flutters idiomatic
approach to composite PlatformView alongside other rendered layers.

This uses the `view embedder` infrastructure to allow
`PlatformViewLayer`
to hold fuchsia views. This is meant to eventually supplant the legacy
`SceneHost` and `ChildViewLayer` mechanism to embed fuchsia `ChildView`.

To see how this will get used check out:
https://fuchsia-review.googlesource.com/c/experiences/+/398536/6/examples/hello_experiences/lib/fuchsia_view.dart

Includes unittests for platform_view.cc.

Note: This change has no impact on the legacy code to embed fuchsia
views.

* Rename OnCreateViewMethodCall to OnCreateView

Same for OnDestroyViewMethodCall to OnDestroyView
Co-authored-by: NSanjay Chouksey <sanjayc@google.com>

Fixes https://github.com/flutter/flutter/issues/59233

* fixing the position of the form

* only apply the fix to blink based desktop browsers

* remove extra log

* address reviewer comments

* addressing reviewer comments

* adding more comments for chrome behavior

Includes the icudtl.dat file which is built into the runner
so it can be used in testing from within the fuchsia repo

https://skia.googlesource.com/skia.git/+log/061a5cf82abb..b795bea220ae

2020-06-25 robertphillips@google.com Add GM::gpuTeardown entry point
2020-06-25 robertphillips@google.com Add GM::onceBeforeDraw method that encapsulates calling onOnceBeforeDraw
2020-06-25 bungeman@google.com Cleanup for TextLine::getGlyphPositionAtCoordinate.
2020-06-25 bsalomon@google.com Fix nearest neighbor sampling of YUV[A] images

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC lovisolo@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

* skip ios safari tests on felt level

* instead of skipping use the new web_installers repo

* re-skip the test. led run failed with another error

* remove led json