Manual Dart SDK roll (#19791)

Adds new package:sse dependency

1e78bd069e [ package:dds ] Add missing package:shelf_static dependency in pubspec.yaml
51d3fae7d3 Revert "Move `BytesBuilder` class and implementation to `dart:typed_data`."
e7b319698d [ package:dds ] Add server-sent event (SSE) support to DDS
d4ac7066b7 Improve diagnostic message when short circuiting (issue 42599)
7960ad545a [ Service ] Fix line numbers in step_through_mixin_from_sdk_test
505fca1ce5 [ package:dds ] Fix issue where StateError could be thrown if DDS shuts down with in-flight requests
47b080de23 [vm/nnbd] Do not check if NNBD experimental flag is enabled for non-null assertions
ef147c0a95 Issue 42699. Stop reporting EXPORT_DUPLICATED_LIBRARY_NAMED and IMPORT_DUPLICATED_LIBRARY_NAMED.
0cc2d9685a [vm] Fix --use-bare-instructions=false on simarm_x64.
6fc75e6a2b [vm] Add tests and packages to the Fuchsia package
a2edb7976c Make CiderCacheEntry public.
4726b1b337 [infra] Update Chrome used in testing to version 84

DEPS

@@ -34,7 +34,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': '66076553820056eca190b9ffd84d2c7e29127d19',
+  'dart_revision': '1e78bd069ee704e8590655e6e5ea4e938fcc1ca9',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -63,6 +63,7 @@ vars = {
   'dart_shelf_web_socket_tag': '0.2.2+3',
   'dart_source_map_stack_trace_tag': '2.0.0',
   'dart_source_span_tag': '1.7.0',
+  'dart_sse_tag': 'e5cf68975e8e87171a3dc297577aa073454a91dc',
   'dart_stack_trace_tag': '56811dbb2530d823b764fe167ec335879a4adb32',
   'dart_stagehand_tag': 'v3.3.9',
   'dart_stream_channel_tag': '70433d577be02c48cb16d72d65654f3b4d82c6ed',
@@ -307,6 +308,9 @@ deps = {
   'src/third_party/dart/third_party/pkg/source_span':
    Var('dart_git') + '/source_span.git' + '@' + Var('dart_source_span_tag'),
 
+  'src/third_party/dart/third_party/pkg/sse':
+   Var('dart_git') + '/sse.git' + '@' + Var('dart_sse_tag'),
+
   'src/third_party/dart/third_party/pkg/stack_trace':
    Var('dart_git') + '/stack_trace.git' + '@' + Var('dart_stack_trace_tag'),
 

ci/licenses_golden/licenses_third_party

-Signature: 313f21a031a990c9a4046dfe176e04e4
+Signature: 1c3458f5a9538545a03415ac53c4f227
 
 UNUSED LICENSES:
 
@@ -9816,10 +9816,10 @@ FILE: ../../../third_party/dart/sdk/lib/core/null.dart
 FILE: ../../../third_party/dart/sdk/lib/core/stacktrace.dart
 FILE: ../../../third_party/dart/sdk/lib/core/string_sink.dart
 FILE: ../../../third_party/dart/sdk/lib/core/symbol.dart
-FILE: ../../../third_party/dart/sdk/lib/internal/bytes_builder.dart
 FILE: ../../../third_party/dart/sdk/lib/internal/list.dart
 FILE: ../../../third_party/dart/sdk/lib/internal/print.dart
 FILE: ../../../third_party/dart/sdk/lib/internal/symbol.dart
+FILE: ../../../third_party/dart/sdk/lib/io/bytes_builder.dart
 FILE: ../../../third_party/dart/sdk/lib/io/data_transformer.dart
 FILE: ../../../third_party/dart/sdk/lib/io/file.dart
 FILE: ../../../third_party/dart/sdk/lib/io/file_impl.dart