[cfe] Remove support for augmentation libraries

Change-Id: I380173d2e1bc747f7a14eae537a7f1eb80ff4850
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/413680
Commit-Queue: Johnni Winther <[email protected]>
Reviewed-by: Chloe Stefantsova <[email protected]>

Author: johnniwinther

pkg/front_end/lib/src/base/scope.dart

@@ -1442,28 +1442,6 @@ abstract class MergedScope<T extends Builder> {
   bool _allowInjectedPublicMember(Builder newBuilder);
 }
 
-// Coverage-ignore(suite): Not run.
-class MergedLibraryScope extends MergedScope<SourceLibraryBuilder> {
-  MergedLibraryScope(SourceLibraryBuilder origin)
-      : super(origin, origin.libraryNameSpace);
-
-  @override
-  SourceLibraryBuilder get originLibrary => _origin;
-
-  void addAugmentationScope(SourceLibraryBuilder builder) {
-    _addAugmentationScope(builder, builder.libraryNameSpace,
-        augmentations: builder.augmentations,
-        setterAugmentations: builder.setterAugmentations,
-        inPatchLibrary: builder.isPatchLibrary);
-  }
-
-  @override
-  bool _allowInjectedPublicMember(Builder newBuilder) {
-    return originLibrary.importUri.isScheme("dart") &&
-        originLibrary.importUri.path.startsWith("_");
-  }
-}
-
 class MergedClassMemberScope extends MergedScope<SourceClassBuilder> {
   final DeclarationNameSpace _originConstructorNameSpace;
   Map<SourceClassBuilder, DeclarationNameSpace>

pkg/front_end/lib/src/source/source_class_builder.dart

@@ -1403,8 +1403,7 @@ class SourceClassBuilder extends ClassBuilderImpl
         if (member is Field && member.isStatic ||
             member is Procedure && member.isStatic) {
           member.name = new Name(
-              '${member.name}'
-              '#${memberBuilder.libraryBuilder.augmentationIndex}',
+              '${member.name}',
               member.name.library);
         } else {
           return;

pkg/front_end/lib/src/source/source_compilation_unit.dart

@@ -43,10 +43,6 @@ class SourceCompilationUnitImpl implements SourceCompilationUnit {
 
   SourceLibraryBuilder? _libraryBuilder;
 
-  /// The object used as the root for creating augmentation libraries.
-  // TODO(johnniwinther): Remove this once parts support augmentations.
-  final SourceCompilationUnit? _augmentationRoot;
-
   // TODO(johnniwinther): Can we avoid this?
   final bool? _referenceIsPartOwner;
 
@@ -191,7 +187,6 @@ class SourceCompilationUnitImpl implements SourceCompilationUnit {
         _libraryNameSpaceBuilder = libraryNameSpaceBuilder,
         _importNameSpace = importNameSpace,
         _prefixNameSpace = prefixNameSpace,
-        _augmentationRoot = augmentationRoot,
         _nameOrigin = nameOrigin,
         _parentScope = parentScope,
         _referenceIsPartOwner = referenceIsPartOwner,
@@ -477,8 +472,8 @@ class SourceCompilationUnitImpl implements SourceCompilationUnit {
         "the compilation unit is finalized.");
     assert(_libraryBuilder == null,
         "Source library builder as already been created for $this.");
-    SourceLibraryBuilder libraryBuilder =
-        _libraryBuilder = new SourceLibraryBuilder(
+    SourceLibraryBuilder libraryBuilder = _libraryBuilder =
+        new SourceLibraryBuilder(
             compilationUnit: this,
             importUri: importUri,
             fileUri: fileUri,
@@ -487,9 +482,6 @@ class SourceCompilationUnitImpl implements SourceCompilationUnit {
             packageLanguageVersion: packageLanguageVersion,
             loader: loader,
             nameOrigin: _nameOrigin,
-            origin: _augmentationRoot
-                // Coverage-ignore(suite): Not run.
-                ?.libraryBuilder,
             target: library,
             indexedLibrary: indexedLibrary,
             referenceIsPartOwner: _referenceIsPartOwner,