* Roll engine to d470fc65ea1cb91ae66706b320d82c4536a4da8b

d470fc65e Roll src/third_party/skia 31972f889641..57263c2e0ccd (3 commits) (flutter/engine#7529)
4acfced38 Ensure the ResourceContext is not ripped out from under dart (flutter/engine#7528)
270e9a78a Roll src/third_party/skia a4e46804946c..31972f889641 (8 commits) (flutter/engine#7526)
e98437248 Roll src/third_party/skia 33b4b4908b7a..a4e46804946c (1 commits) (flutter/engine#7524)
4c135c298 Revert "Wrap the user entrypoint function in a zone with native exception callback. (flutter/engine#7512)" (flutter/engine#7522)
0a080a1e0 Roll src/third_party/dart 700254996f..da09945643 (14 commits) da09945643 Update dartfix pubspec before publishing b81c1b2095 Parse spread collections in map literals 1b0d93366d Add list literal spread collection fasta test cases 6c2ea4936a Clean up several deprecation hints 07f95e7761 Revert "[vm] Enable timeline on Fuchsia even in product mode." 9cdce03e16 [dart2js] Improve null receiver guard removal near JS code c3599a9d8c Revert "[vm, isolate] Fix length truncation in message snapshots." 95e10c336f Revert "[vm] Assert callback state for all Dart_Set*ReturnValue." 3f7b371f2c [vm] Enable timeline on Fuchsia even in product mode. 4b22195ea1 [vm, isolate] Fix length truncation in message snapshots. a353b1172a [vm, compiler] Remove TAG_IC_DATA, which has since been subsumed by RebindRule. ca12afec50 [vm] Assert callback state for all Dart_Set*ReturnValue. 2028006a25 [Observatory] Updated Dart icon to new colour scheme 84273b9f36 Improvements for flow analysis.
fff537777 Roll src/third_party/skia 25b9f192ed8c..33b4b4908b7a (1 commits) (flutter/engine#7520)
a58cc3960 Roll src/third_party/skia 1ce80fb351a2..25b9f192ed8c (5 commits) (flutter/engine#7517)
52e0e9da5 Roll src/third_party/skia 081e6f375497..1ce80fb351a2 (12 commits) (flutter/engine#7514)
25559ed07 Wrap the user entrypoint function in a zone with native exception callback. (flutter/engine#7512)
1b0d09b21 Roll src/third_party/dart f701e11756..700254996f (5 commits) 700254996f [ Observatory / Dartium ] Updated observatory documentation and tests to remove references to Dartium. 78abb98ee7 [vm/bytecode] Fix AST removal for package-split kernel files with bytecode 0075b58bb8 CHANGELOG entry for DEPRECATED_MEMBER_USE split a5f102a7d1 Analyzer: first pass at reporting unchecked nullable value usage. a10ddca1b1 [ VM / Service ] Allow for `profile_period` flag to be set via the service protocol
e7ade51da Remove unused headers (flutter/engine#7511)
369b4db35 Roll src/third_party/skia 1374c85fbf53..081e6f375497 (6 commits) (flutter/engine#7510)
366d44e11 Roll src/third_party/dart 9b5eabdaca..f701e11756 (10 commits) f701e11756 [ VM / Debugger ] Fix issue where a 'Step' command issued when there's no stack caused a crash. c5bfccc6fb Make downloading the LSP spec a flag and commit the version parsed locally dbeec3bbf3 Fix formatting in generated LSP file header bfe15d87d8 Fix LSP exceptions serializing ResponseErrors with Uris 7984dc4fcc Prepare to publish analyzer version 0.34.2. 4b1b2f9176 Switch LSP formatter to not fetch resolved ASTs that aren't used 5ce5d697da Implement LSP code folding b47524d5b0 Ensure all unhandled exceptions are recorded on the server 8ba2de2344 Sort context for conflicting inherited members 215f6620e7 [Kernel] Signal errors on static fields in constant contexts