"master->main" migration

Change-Id: I773e0a60a782f9e6678cea22e2a7d8fae48cffa3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212869
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Phil Quitslund <pquitslund@google.com>

pkg/analysis_server/README.md

@@ -21,5 +21,5 @@ and [Language Server Protocol][lsp_spec] support is documented in
 Please file feature requests and bugs at the [issue tracker][tracker].
 
 [tracker]: https://github.com/dart-lang/sdk/issues
-[api]: https://htmlpreview.github.io/?https://github.com/dart-lang/sdk/blob/master/pkg/analysis_server/doc/api.html
+[api]: https://htmlpreview.github.io/?https://github.com/dart-lang/sdk/blob/main/pkg/analysis_server/doc/api.html
 [lsp_spec]: https://microsoft.github.io/language-server-protocol/

pkg/analysis_server/doc/tutorial/quick_fix.md

@@ -319,7 +319,7 @@ list of fields with `final`.
 We're now ready to create the actual fix. To do that we're going to use the
 `ChangeBuilder` passed to the `compute` method. In the example below we'll
 introduce a couple of the methods on `ChangeBuilder`, but for more information
-you can read [Creating `SourceChange`s](https://github.com/dart-lang/sdk/blob/master/pkg/analyzer_plugin/doc/tutorial/creating_edits.md).
+you can read [Creating `SourceChange`s](https://github.com/dart-lang/sdk/blob/main/pkg/analyzer_plugin/doc/tutorial/creating_edits.md).
 
 Fields can be declared with either `final`, `const`, `var`, or a type
 annotation, and the change that needs to be made depends on how the field was

pkg/analysis_server/lib/src/status/diagnostics.dart

@@ -667,7 +667,7 @@ abstract class DiagnosticPage extends Page {
         <a href="/status" ${isNavPage ? ' class="active"' : ''}>Diagnostics</a>
         <a href="/feedback" ${isCurrentPage('/feedback') ? ' class="active"' : ''}>Feedback</a>
         <a href="https://dart.dev/tools/dart-analyze" target="_blank">Docs</a>
-        <a href="https://htmlpreview.github.io/?https://github.com/dart-lang/sdk/blob/master/pkg/analysis_server/doc/api.html" target="_blank">Spec</a>
+        <a href="https://htmlpreview.github.io/?https://github.com/dart-lang/sdk/blob/main/pkg/analysis_server/doc/api.html" target="_blank">Spec</a>
       </nav>
     </div>
     </header>

pkg/analyzer/README.md

@@ -96,13 +96,13 @@ our clients, but some pain is inevitable.
 
 See the [LICENSE] file.
 
-[serverapi]: https://htmlpreview.github.io/?https://github.com/dart-lang/sdk/blob/master/pkg/analysis_server/doc/api.html
-[dartanalyzer]: https://github.com/dart-lang/sdk/tree/master/pkg/analyzer_cli#dartanalyzer
+[serverapi]: https://htmlpreview.github.io/?https://github.com/dart-lang/sdk/blob/main/pkg/analysis_server/doc/api.html
+[dartanalyzer]: https://github.com/dart-lang/sdk/tree/main/pkg/analyzer_cli#dartanalyzer
 [list]: https://groups.google.com/a/dartlang.org/forum/#!forum/analyzer-discuss
 [lintrules]: https://dart-lang.github.io/linter/lints/
 [glob]: https://pub.dev/packages/glob
-[LICENSE]: https://github.com/dart-lang/sdk/blob/master/pkg/analyzer/LICENSE
+[LICENSE]: https://github.com/dart-lang/sdk/blob/main/pkg/analyzer/LICENSE
 [dartfmt]: https://github.com/dart-lang/dart_style
 [dartdoc]: https://github.com/dart-lang/dartdoc
-[analysis_sever]: https://github.com/dart-lang/sdk/tree/master/pkg/analysis_server
+[analysis_sever]: https://github.com/dart-lang/sdk/tree/main/pkg/analysis_server
 [custom_analysis]: https://dart.dev/guides/language/analysis-options

pkg/analyzer/pubspec.yaml

@@ -1,7 +1,7 @@
 name: analyzer
 version: 2.2.0
 description: This package provides a library that performs static analysis of Dart code.
-homepage: https://github.com/dart-lang/sdk/tree/master/pkg/analyzer
+homepage: https://github.com/dart-lang/sdk/tree/main/pkg/analyzer
 
 environment:
   sdk: '>=2.12.0 <3.0.0'

pkg/dartdev/README.md

@@ -36,6 +36,6 @@ yourself with the [design principles][design] that guide this tool's UX.
 Please file feature requests and bugs in the Dart SDK [issue tracker][tracker]
 with label `area-dart-cli`.
 
-[contributing]: https://github.com/dart-lang/sdk/blob/master/CONTRIBUTING.md
-[design] https://github.com/dart-lang/sdk/blob/master/pkg/dartdev/doc/design.md
+[contributing]: https://github.com/dart-lang/sdk/blob/main/CONTRIBUTING.md
+[design] https://github.com/dart-lang/sdk/blob/main/pkg/dartdev/doc/design.md
 [tracker]: https://github.com/dart-lang/sdk/labels/area-dart-cli

pkg/dartdev/lib/src/commands/language_server.dart

@@ -22,7 +22,7 @@ It communicates over stdin and stdout and provides services like code completion
 
 For more information about the server's capabilities and configuration, see:
 
-  https://github.com/dart-lang/sdk/tree/master/pkg/analysis_server''';
+  https://github.com/dart-lang/sdk/tree/main/pkg/analysis_server''';
 
   LanguageServerCommand({bool verbose = false})
       : super(commandName, commandDescription, verbose, hidden: !verbose);

pkg/dartdev/test/smoke/smoke_test.dart

@@ -54,7 +54,7 @@ void main() {
       // This test verifies that an error isn't thrown when a valid experiment
       // is passed.
       // Experiments are lists here:
-      // https://github.com/dart-lang/sdk/blob/master/tools/experimental_features.yaml
+      // https://github.com/dart-lang/sdk/blob/main/tools/experimental_features.yaml
       test(
           'dart --enable-experiment=variance '
           'run smoke.dart', () async {

pkg/meta/README.md

@@ -30,5 +30,5 @@ Questions and discussions are welcome at the
 See the [LICENSE][license] file.
 
 [issues]: https://github.com/dart-lang/sdk/issues
-[license]: https://github.com/dart-lang/sdk/blob/master/pkg/analyzer/LICENSE
+[license]: https://github.com/dart-lang/sdk/blob/main/pkg/analyzer/LICENSE
 [list]: https://groups.google.com/a/dartlang.org/forum/#!forum/analyzer-discuss

pkg/meta/pubspec.yaml

@@ -1,7 +1,7 @@
 name: meta
 # Note, because version `2.0.0` was mistakenly released, the next major version must be `3.x.y`.
 version: 1.7.1-dev
-homepage: https://github.com/dart-lang/sdk/tree/master/pkg/meta
+homepage: https://github.com/dart-lang/sdk/tree/main/pkg/meta
 description: >-
  Annotations that developers can use to express the intentions that otherwise
  can't be deduced by statically analyzing the source code. These annotations