Revert "Revert "Reland "Run Flutter on iOS and Android with color correct Skia (#3826)" (#3878)" (#3895)

This reverts commit 1db18a40.

See https://github.com/dart-lang/sdk/issues/29971

This reverts commit 2d9155e1.

Fixes a regression with semitransparent images (flutter/flutter#11169)

This action is triggered when the user swipes (in accessibility mode) to the last visible item of a scrollable list to bring that item fully on screen.

iOS implementation to follow.

Fixes https://github.com/flutter/flutter/issues/11007

* Revert "Revert "Reland "Run Flutter on iOS and Android with color correct Skia" (#3818)" (#3823)"

This reverts commit db8d8a99.

* Fix test code to match internal API change

* preserve Window callback zones

Run Window callbacks in the zone they are registered in. This is consistent with how other native API work, such as `scheduleMicrotask`, `Timer`, and `dart:io`. This also enables the developers to use the `Zone` API to capture and log unhandled Dart errors.

* refactor wrapping

* new line

* fewer if checks; group getters/setters/fields

* inline _invokeOnPointerDataPacket

This reverts commit 2650f529.

* Revert "Revert "Run Flutter on iOS and Android with color correct Skia (#3743)" (#3775)"

This reverts commit cfe70e07.

* Enable sRGB on IO thread, too

* Add 4444 as a fallback rendering mode

* Use bare ptr to SkColorSpace (not sk_sp) in PrerollContext

This attempts to make the Canvas API and some related features more
likely to throw a Dart exception than crash when exposed to bad input.

Depends on rolling tonic to
https://fuchsia-review.googlesource.com/c/35742/ which this patch does
not yet do, but I wanted to put it up for review to see if it was even
a reasonable approach.

* Revert "Fix licenses_lib golden file (#3798)"

This reverts commit d8ac43c3.

* Revert "Remove ParagraphConstriants (#3796)"

This reverts commit 8ccf767f.

* Revert "Reland "Initial integration of libtxt with Flutter alongside Blink." (#3793)"

This reverts commit 3c049219.

ASL was deprecated in iOS 10 and started causing SIGPIPE issues in iOS
10.3. Under the iOS 8 SDK, syslog() stopped working as of iOS 10.3
devices, with the result that ASL stdout/stderr forwarding was the only
means of logging. The engine now builds against the iOS 10 SDK, with
deployment target of iOS 8. Under this SDK, syslog() works correctly
across all supported OS versions.

NOTE: This is a temporary fix to get developers unblocked. While this
does fix the SIGPIPE issue and put iOS logging on par with the Android
solution, the intent is to move to a dedicated communication channel
with flutter_tools that isn't log-based.

* Transition to Hybrid lib/txt and blink text system.

* Revert "Enable line join styles and miter limit. (#3777)"

This reverts commit 5403f65b.

* Revert "Revert "Update switches to use StringView." (#3784)"

This reverts commit 80f039ff.

* Revert "Initial integration of libtxt with Flutter alongside Blink. (#3771)"

This reverts commit c548c65b.

* Add support for join types and miter limits.

* Fix miter limit data type.

* Adding some clearer documentation to painting.dart

* Clarifying more documentation.

* Code review changes

* Fixed debug printing of stroke width and miter limit

* Adding missing periods at the ends of sentences.

This reverts commit ffe8181f.

* Adding SemanticsFlag.isSelected

* typo

* Run Flutter on iOS and Android with color correct Skia (#3716)

***Turns on color correct rendering for Android and iOS
***Communicates dst color space to raster cache
***Turns on color space aware image decoding

Test:
***color_testing_demo on Pixel XL
***flutter_gallery on iPad Mini and iPad Pro (haven't figured out how to run manual_tests on iOS)

TODO:
I needed to split up this CL somewhere. These are follow-up tasks.
***Make desktop backends color correct
***Make debugging tools (ex: encoding frames to png) preserve color space
***Investigate using UIKit API to allow iOS to fine tune color space of rendered content

Fixes a Fuchsia breakage introduced in
dcfcc925.

***Turns on color correct rendering for Android and iOS
***Communicates dst color space to raster cache
***Turns on color space aware image decoding

Test:
***color_testing_demo on Pixel XL
***flutter_gallery on iPad Mini and iPad Pro (haven't figured out how to run manual_tests on iOS)

TODO:
I needed to split up this CL somewhere. These are follow-up tasks.
***Make desktop backends color correct
***Make debugging tools (ex: encoding frames to png) preserve color space
***Investigate using UIKit API to allow iOS to fine tune color space of rendered content

Fixes a regression introduced in
dcfcc925 in flutter_tester on Linux.

Eliminates logging to stdout on Android -- now using __android_log_print
only.

Eliminates logging to syslog on iOS -- now writing to stdout with the
existing ASL redirection (from platform_mac.mm) only. syslog() wasn't
ever picked up in logs.

This patch is a pre-factoring change before swapping out iOS engine
logging to a flutter-specific mechanism.

**This is a breaking change on iOS**

Previously, the `paused` state was entered when the application resigned
active status. `inactive` now maps to this status. `paused` now maps to
an app that has been backgrounded.

`inactive` is currently emitted on iOS only and corresponds to iOS's
foreground inactive state.

Current state transitions are:
`resumed` <--> `inactive` <--> `paused`

suspending is currently emitted on Android only and corresponds to the
transition to Android's stopped state.

Current state transitions are:
`resumed` <--> `paused` --> `suspending` --> `resumed`

These transitions may change in future.

Fixes https://github.com/flutter/flutter/issues/10087
Fixes https://github.com/flutter/flutter/issues/10233

Fixes https://github.com/flutter/flutter/issues/9439

This will ensure that the engine is not broken by a future
skia roll.

Skia doesn't actually create the image if we don't supply a color space.

Fixes https://github.com/flutter/flutter/issues/9473