* Workaround for canvas element lacking support for 3d setTransform

* update golden test

* Add webkit workaround

* Implement DOM rendering for perspective

* cleanup

* update goldens lock

* Add check for shader and filtermask for dom use

* Fix svg viewBox. Move zIndex check to bitmap canvas

* Fix null check warning

* Fix scene_builder zIndex=-1 test to force canvas usage

* Add blendmode handling for DOM mode

* Update maxdiff and golden locks

* Remove unused import

* Add drawcolor/drawpaint test. Fix bounds for drawColor/drawPaint

* update golden locks

* adjust drawColor for dpr

* Update test to use canvas

* Fix toDataUrl NNBD

* Update Picture.toImage to use canvas to obstain image data

* Remove write:true from golden calls

* Add fill-rule for _pathToSvgElement

* Update golden locks

* Fix sceneBuilder pushClip / add missing clipBehaviour

* Fix test now that clipping works correctly

* move overflow handling for tests into DOMClip.addOverflow

* Add clipRect to test to keep render inside bitmap canvas area

* Update compositing test, fix drawColor coordinates

* update golden locks

* Skip test for matchGolden infra fail

* update golden lock

* merge

* update maxdiff for text over canvas

* update golden diff

* update paint spread bounds maxdiff

* update paint spread maxDiff

When linting flutter/vulkan/vulkan_window.cc, the call to
GrDirectContext::MakeVulkan is undefined when SK_VULKAN is not defined,
triggering a lint error.

Bug: https://github.com/flutter/flutter/issues/68331

This implements the Gtk hooks required to support multi-step input
methods on Linux. This builds on the support for composing regions
(preedit region in Gtk terminology) added to TextInputModel in
https://github.com/flutter/engine/pull/21682.

Specifically, the following changes are included:

1. Add handler for TextInput.setMarkedTextRegion framework messages: On
any change to the EditableText in the framework, this message is sent
which provides an updated rect (in the local co-ordinates of the
EditableText) for the composing region. If not in composing mode, the
cursor rect is sent.

2. Add handler for TextInput.setEditableSizeAndTransform framework messages:
On any change to the RenderObject underlying the EditableText, an
updated size for the full EditableText widget, as well as an affine
transform matrix from local co-ordinates to Flutter root co-ordinates is
sent.

3. On either of the above messages, we use the transformed composing
rect to compute the cursor position in Gtk window co-ordinates and
inform Gtk, so that it can position any system IM composing window
correctly for on-the-spot composing, such as is used when inputting
Japanese text.

4. Adds handlers for preedit-start, preedit-changed, and preedit-end
signals from Gtk. These are passed on to the TextInputModel.

5. Updates the preedit-commit handler to commit the composing region to
the text or, if not composing, insert new text at the cursor.

6. Updates the handler for TextInput.setEditingState framework messages
to extract the composing range base and extent and pass these on to
TextInputModel.

7. Updates update_editing_state function to set composing base and
extent on text input state updates sent to the framework.

This PR fixes a few small memory leaks in FlTextInputPlugin. All three cases
are creating temporary FlValue instances for lookups and comparison without
ever releasing them.

Fixes https://github.com/flutter/flutter/issues/68446

Specify the Noto Naskh Arabic font to get consistent results in tests using Arabic characters (#21974)

See https://github.com/flutter/flutter/issues/68493

while we fix them.

Fixes https://github.com/flutter/flutter/issues/68411

Fixes flutter/flutter#68377

Should be a nullable string. Looks like --null-assertions does not cover the native binding code.

* Collect logs in the background.

* Use fuchsia_ctl log_file option.

* Delete the correct file.

* Remove commented code.

A version of this macro is present in most code-bases. The use of this macro
must satisfy two requirements:

1: If reached, the process must be terminated in all runtime modes and at all
   optimization levels.
2: If the compiler requires a value to be returned from the function,
   encountering this macro should not make the compiler insist on a return value
  (since the process is about to die anyway).

We used to have a version of this macro that wasn't widely used and didn't
satisfy the two requirements. I have removed the same and another unused macro
in fml/logging.h

Fixes https://github.com/flutter/flutter/issues/68164.

This adds enforcement to the linter that all FLUTTER_NOLINT comments be
of the form:

    // FLUTTER_NOLINT: https://github.com/flutter/flutter/issue/ID

Every linter opt-out should have an associated bug describing what issue
it works around so that others can work on eliminating it, or at least
understanding the rationale and whether it's still relevant.

This also reduces the likelihood of inadvertent copy-pasting into new
files either because the author fails to spot it when copying the
copyright block from another file, or assumes that it's necessary for
some subcomponent of the engine.

Bug: https://github.com/flutter/flutter/issues/68273

Eliminates FLUTTER_NOLINT where they can be landed without triggering
lint failures.

In an upcoming patch, we'll enable enforcement that all FLUTTER_NOLINT
comments include an issue link. This migrates the remaining uses to that
format.

Bug: https://github.com/flutter/flutter/issues/68273

This reverts commit 1bc025d6.

See https://github.com/flutter/flutter/issues/68315

Snapshots compiled with sound null-safety enabled require changes to the way in
which isolates are launched. Specifically, the `Dart_IsolateFlags::null_safety`
field needs to be known upfront. The value of this field can only be determined
once the kernel snapshot is available. This poses a problem in the engine
because the engine used to launch the isolate at shell initialization and only
need the kernel mappings later at isolate launch (when transitioning the root
isolate to the `DartIsolate::Phase::Running` phase). This patch delays launch of
the isolate on the UI task runner till a kernel mapping is available. The side
effects of this delay (callers no longer having access to the non-running
isolate handle) have been addressed in this patch. The DartIsolate API has also
been amended to hide the method that could return a non-running isolate to the
caller.  Instead, it has been replaced with a method that requires a valid
isolate configuration that returns a running root isolate. The isolate will be
launched by asking the isolate configuration for its null-safety
characteristics.

A side effect of enabling null-safety is that Dart APIs that work with legacy
types will now terminate the process if used with an isolate that has sound
null-safety enabled. These APIs may no longer be used in the engine. This
primarily affects the Dart Convertors in Tonic that convert certain C++ objects
into the Dart counterparts. All known Dart Converters have been updated to
convert C++ objects to non-nullable Dart types inferred using type traits of the
corresponding C++ object. The few spots in the engine that used the old Dart
APIs directly have been manually updated. To ensure that no usage of the legacy
APIs remain in the engine (as these would cause runtime process terminations),
the legacy APIs were prefixed with the `DART_LEGACY_API` macro and the macro
defined to `[[deprecated]]` in all engine translation units. While the engine
now primarily works with non-nullable Dart types, callers can still use
`Dart_TypeToNonNullableType` to acquire nullable types for use directly or with
Tonic. One use case that is not addressed with the Tonic Dart Convertors is the
creation of non-nullable lists of nullable types. This hasn’t come up so far in
the engine.

A minor related change is reworking tonic to define a single library target.
This allows the various tonic subsystems to depend on one another. Primarily,
this is used to make the Dart convertors use the logging utilities. This now
allows errors to be more descriptive as the presence of error handles is caught
(and logged) earlier.

Fixes https://github.com/flutter/flutter/issues/59879

https://dart.googlesource.com/sdk.git/+log/e655b9a3839e..b58cfe5ab24e

2020-10-16 dart-luci-ci-builder@dart-ci.iam.gserviceaccount.com Version 2.11.0-230.0.dev

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