Investigation is being tracked in https://github.com/flutter/flutter/issues/50032.

https://dart.googlesource.com/sdk.git/+log/ed441e48d055..c8ed304e979a

git log ed441e48d055..c8ed304e979a --date=short --first-parent --format='%ad %ae %s'
2020-02-02 devoncarew@google.com [dartdev] add a dartdev 'create' command

Created with:
  gclient setdep -r src/third_party/dart@c8ed304e979a

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Bug: None
Tbr: dart-vm-team@google.com

Roll fuchsia/sdk/core/mac-amd64 from jtwQF... to 6h3IH...

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https://skia.googlesource.com/skia.git/+log/5d92ae2b56df..3d05192abedf

git log 5d92ae2b56df..3d05192abedf --date=short --first-parent --format='%ad %ae %s'
2020-02-01 herb@google.com Simplify subrun atlas generation tracking

Created with:
  gclient setdep -r src/third_party/skia@3d05192abedf

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https://skia.googlesource.com/skia.git/+log/776293dceefd..5d92ae2b56df

git log 776293dceefd..5d92ae2b56df --date=short --first-parent --format='%ad %ae %s'
2020-02-01 brianosman@google.com Implement constantOutputForConstantInput in GrColorSpaceXformEffect

Created with:
  gclient setdep -r src/third_party/skia@5d92ae2b56df

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https://skia.googlesource.com/skia.git/+log/1b80c357926b..776293dceefd

git log 1b80c357926b..776293dceefd --date=short --first-parent --format='%ad %ae %s'
2020-02-01 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go Deps
2020-02-01 agrieve@chromium.org Add missing "const" to SkMD5::finish::PADDING

Created with:
  gclient setdep -r src/third_party/skia@776293dceefd

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This reverts commit 4a55b4fd.

Roll fuchsia/sdk/core/mac-amd64 from x6sVj... to jtwQF...

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https://dart.googlesource.com/sdk.git/+log/91a3ea89c8e4..ed441e48d055

git log 91a3ea89c8e4..ed441e48d055 --date=short --first-parent --format='%ad %ae %s'
2020-02-01 fishythefish@google.com Update all Slow tests to be Slow, Pass.
2020-01-31 srawlins@google.com Fix another windows test in analyzer
2020-01-31 sigmund@google.com fix dart2js golden file.
2020-01-31 liama@google.com [vm] Stop storing to temp in LoadLateField

Created with:
  gclient setdep -r src/third_party/dart@ed441e48d055

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Bug: None
Tbr: dart-vm-team@google.com

This was only necessary when the Engine had to build in multiple buildroots
where the sources where checked out at different paths relative to the
buildroot. This is no longer the case and there are already cases GN rules
have been written that mix and match variable usage with the direct
specification of the path to the Flutter sources relative to the sole buildroot.

https://skia.googlesource.com/skia.git/+log/4513cdde4912..1b80c357926b

git log 4513cdde4912..1b80c357926b --date=short --first-parent --format='%ad %ae %s'
2020-01-31 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).

Created with:
  gclient setdep -r src/third_party/skia@1b80c357926b

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Bug: None
Tbr: reed@google.com

https://dart.googlesource.com/sdk.git/+log/5ae5aff6406a..91a3ea89c8e4

git log 5ae5aff6406a..91a3ea89c8e4 --date=short --first-parent --format='%ad %ae %s'
2020-01-31 zichangguo@google.com Revert "[dart:io] Stop forcing lower case on HttpHeaders"
2020-01-31 jcollins@google.com Add path parsing to pub support.
2020-01-31 srawlins@google.com Load navigation programatically; use badges for edit counts; #40115
2020-01-31 kustermann@google.com [vm/compiler] Mark Box instructions as non-speculative (since the inputs are always unboxed values and dont need to be checked)
2020-01-31 vsm@google.com [dartdevc/nnbd] enable co19_2 tests for legacy mode
2020-01-31 jwren@google.com Initial RelevanceAnalyzer support in the completion_metrics.dart algorithm with an initial example implementation of RHSOfAsExpression
2020-01-31 kustermann@google.com [vm] Set Class::is_const() based on final fields instead of generative constructors (which can be shaken by TFA)
2020-01-31 sigmund@google.com Update check_nnbd_sdk to diff expectations directly in dart.
2020-01-31 vsm@google.com [dartdevc] use var for top-level
2020-01-31 fishythefish@google.com [dart2js] Use flags to choose between legacy/NNBD in RTI.
2020-01-31 nshahan@google.com [dartdevc] Add dart:io back to the sdk
2020-01-31 johnniwinther@google.com [cfe] Add new flags to AsExpression and IsExpression
2020-01-31 scheglov@google.com Check for correct overrides as the specification requires.
2020-01-31 sigmund@google.com Fix based64 decoder.
2020-01-31 fishythefish@google.com [dart2js] Update generic function subtyping.
2020-01-31 srawlins@google.com NNBD preview: Add 'view' links to Edit List; #40115
2020-01-31 brianwilkerson@google.com Enable always_declare_return_types in analysis_server
2020-01-31 brianwilkerson@google.com Enable empty_catches in analysis_server
2020-01-31 brianwilkerson@google.com Improve the fix for empty_catch
2020-01-31 zichangguo@google.com [dart:io] Stop forcing lower case on HttpHeaders
2020-01-31 zichangguo@google.com [vm] seperate error and unknown types for getStdioHandletype
2020-01-31 kustermann@google.com [vm/reload] Fix crash in scavneger / GC after reload on ia32

Created with:
  gclient setdep -r src/third_party/dart@91a3ea89c8e4

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Bug: None
Tbr: dart-vm-team@google.com

FlutterView#enableTransparentBackground has been deprecated for some
time now since it breaks a11y highlighting in most cases. When the
warning was first added there was no known workaround, but now the v2
embedding is in stable and ready to support this usecase. Update the
warning to point to the v2 embedding.

https://skia.googlesource.com/skia.git/+log/0ee16f689843..4513cdde4912

git log 0ee16f689843..4513cdde4912 --date=short --first-parent --format='%ad %ae %s'
2020-01-31 herb@google.com Rename flush -> issueDrawMaybeInlineUpload
2020-01-31 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2020-01-31 mtklein@google.com let's try to fix nullptr + k
2020-01-31 robertphillips@google.com Minor GM cleanup
2020-01-31 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2020-01-31 drott@chromium.org Remove CGFontRef parameter from SkMakeTypefaceFromCTFont
2020-01-31 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2020-01-31 jvanverth@google.com Enable async MTLLibrary and MTLRenderPipelineState creation.
2020-01-31 jlavrova@google.com Small fix: ignore empty unresolved blocks to avoid (unnecessary) ASSERT later
2020-01-31 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2020-01-31 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go Deps
2020-01-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 ee07cb317579..e196bc85ac2d (3 commits)
2020-01-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 430def835f9f..79b36b640692 (6 commits)

Created with:
  gclient setdep -r src/third_party/skia@4513cdde4912

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Bug: None
Tbr: reed@google.com

Also update all known test harnesses to use this and fixes the broken shell_unittests harness.

Fixes https://github.com/flutter/flutter/issues/49853

Some parts of the embedding (e.g. VsyncWaiter) may hold global references to
system services obtained through the context used during initialization.
These must not be associated with an activity or other non-application context.

Fixes https://github.com/flutter/flutter/issues/49612

This regressed when the symbols were no longer packed in discrete blobs but
instead moved to an ELF file.

Regressed in https://github.com/flutter/engine/commit/d9080029af4b917fd5813c1db7f96d509343e01e
Unnoticed because of https://github.com/flutter/flutter/issues/49733
Fixes https://github.com/flutter/flutter/issues/49763

https://dart.googlesource.com/sdk.git/+log/162d6c5634a0..5ae5aff6406a

git log 162d6c5634a0..5ae5aff6406a --date=short --first-parent --format='%ad %ae %s'
2020-01-31 kustermann@google.com [vm/embedder] Add documentation to Dart_CompileToKernel
2020-01-31 whesse@google.com [infra] Print correct configuration groups in failures link
2020-01-31 johnniwinther@google.com [cfe,analyzer] Disallow type parameters on operator methods
2020-01-31 jensj@google.com [CFE] Don't issue export errors twice in incremental compiler
2020-01-31 jensj@google.com [CFE] Fix memory leak in incremental compiler
2020-01-31 johnniwinther@google.com [cfe] Use fileUri in error reporting
2020-01-31 jensj@google.com [CFE] Transformations can now tell of they changed the structure of a class
2020-01-31 victor.agnez@hotmail.com [vm] Reland support for real unboxed floating point fields in AOT
2020-01-31 johnniwinther@google.com Avoid implicit downcast in nnbd sdk
2020-01-31 karlklose@google.com [infra] Use pkg/smith's test matrix support in test.dart
2020-01-31 cskau@google.com [SDK] Fixes remaining issues with --lazy-async-stacks on.
2020-01-31 jensj@google.com [CFE] Check class hierarchy in incremental compiler test
2020-01-31 dmitryas@google.com [cfe] Don't allow implicit tear-offs of .call on nullable receivers
2020-01-31 johnniwinther@google.com [cfe] Handle unresolved superclass on opt-out class with opt-in platform
2020-01-31 karlklose@google.com [infra] Add support for branches to pkg/smith
2020-01-31 nshahan@google.com [dartdevc] Update subtype check to allow mutual subtypes in bounds
2020-01-31 sra@google.com [dart2js] Make 'return null;' more reliable
2020-01-31 rmacnak@google.com [vm, service] Create a treemap from very large heap snapshots outside of the browser.
2020-01-31 nshahan@google.com [dartdevc] Apply lints and cleanup violations
2020-01-31 brianwilkerson@google.com Add return types to methods in analysis_server
2020-01-30 liama@google.com [vm] Reland the flag flip behind the --nnbd build flag
2020-01-30 scheglov@google.com Implement runtime type equality.
2020-01-30 brianwilkerson@google.com Update the lsp generator to generate return types for all methods
2020-01-30 brianwilkerson@google.com Add return types to more methods in analysis_server
2020-01-30 paulberry@google.com Migration: Improvements to graph debug output.
2020-01-30 paulberry@google.com Migration: change implicit downcasts to explicit ones when necessary.
2020-01-30 liama@google.com Revert "[vm] Set non_nullable_flag() to true"
2020-01-30 sigmund@google.com re-add web libraries as part of the sdk

Created with:
  gclient setdep -r src/third_party/dart@5ae5aff6406a

If this roll has caused a breakage, revert this CL and stop the roller
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Bug: None
Tbr: dart-vm-team@google.com

https://skia.googlesource.com/skia.git/+log/6305b2f8342a..0ee16f689843

git log 6305b2f8342a..0ee16f689843 --date=short --first-parent --format='%ad %ae %s'
2020-01-31 herb@google.com Add reverse iterators to SkSpan
2020-01-30 herb@google.com Cleanup GrStrike management because we do not abandon strikes

Created with:
  gclient setdep -r src/third_party/skia@0ee16f689843

If this roll has caused a breakage, revert this CL and stop the roller
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Roll fuchsia/sdk/core/mac-amd64 from yissX... to x6sVj...

If this roll has caused a breakage, revert this CL and stop the roller
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These add no value to engine developers anymore and are not visible to external
users because of the low log severity.

* Use bundled Roboto in all tests

Revert "Migrate flutter_runner from flutter_runner::{Thread,Loop} to fml::{Thread,MessageLoop} (#15118)" (#16277)

This reverts commit 41e8ed07.

https://skia.googlesource.com/skia.git/+log/36c0521d57de..6305b2f8342a

git log 36c0521d57de..6305b2f8342a --date=short --first-parent --format='%ad %ae %s'
2020-01-30 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2020-01-30 fmalita@chromium.org [sksg] Clean up public headers
2020-01-30 scroggo@google.com Expose the ICC profile from SkAndroidCodec
2020-01-30 mtklein@google.com pdf rasterization
2020-01-30 egdaniel@google.com Update GrSurfaceProxy::Copy to return a view.
2020-01-30 hcm@google.com update release notes page to include M81
2020-01-30 hcm@google.com new section and formatting
2020-01-30 brianosman@google.com Reland "Fix skshaper in component builds"

Created with:
  gclient setdep -r src/third_party/skia@6305b2f8342a

If this roll has caused a breakage, revert this CL and stop the roller
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This reverts commit 4ac82f66.

This caused a regression in a framework test (material/text_field_splash_test.dart)

Prior to this change SceneHostBindinds was a ThreadLocal but the
intention was for it to be IsolateLocal. Given that dart
could collect this map on a non-UI thread this caused
use-after-free issues.

This change fixes it by making it keyed on isolate and koid
this is not the ideal solution, this would exist on
dart isolate group data struct. Given that Fuchsia is moving
to use the embedder API, the decision to use this temporary
work around was made.

fixes https://github.com/flutter/flutter/issues/49738