Use absolute URIs for LinkedDependency.uri/parts.

pkg/analyzer/test/src/summary/resynthesize_ast_test.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.test.src.summary.resynthesize_ast_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/dart/element/element.dart';
@@ skipping 871 matching lines @@
   }
 
   void _serializeLibrary(Source librarySource) {
     if (librarySource == null || librarySource.isInSystemLibrary) {
       return;
     }
     if (!serializedSources.add(librarySource)) {
       return;
     }
 
-    Source resolveRelativeUri(String relativeUri) {
-      Source resolvedSource =
-          context.sourceFactory.resolveUri(librarySource, relativeUri);
-      if (resolvedSource == null && !allowMissingFiles) {
-        throw new StateError('Could not resolve $relativeUri in the context of '
-            '$librarySource (${librarySource.runtimeType})');
-      }
-      return resolvedSource;
-    }
-
-    UnlinkedUnit getPart(String relativeUri) {
-      return _getUnlinkedUnit(resolveRelativeUri(relativeUri));
+    UnlinkedUnit getPart(String absoluteUri) {
+      Source source = context.sourceFactory.forUri(absoluteUri);
+      return _getUnlinkedUnit(source);
     }
 
     UnlinkedPublicNamespace getImport(String relativeUri) {
       return getPart(relativeUri)?.publicNamespace;
     }
 
     UnlinkedUnit definingUnit = _getUnlinkedUnit(librarySource);
     if (definingUnit != null) {
-      LinkedLibraryBuilder linkedLibrary = prelink(
+      LinkedLibraryBuilder linkedLibrary = prelink(librarySource.uri.toString(),
           definingUnit, getPart, getImport, context.declaredVariables.get);
       linkedLibrary.dependencies.skip(1).forEach((LinkedDependency d) {
-        _serializeLibrary(resolveRelativeUri(d.uri));
+        Source source = context.sourceFactory.forUri(d.uri);
+        _serializeLibrary(source);
       });
     }
   }
 }
 
 /**
  * Interface that [_AstResynthesizeTestMixin] requires of classes it's mixed
  * into.  We can't place the getter below into [_AstResynthesizeTestMixin]
  * directly, because then it would be overriding a field at the site where the
  * mixin is instantiated.
@@ skipping 32 matching lines @@
   }
 
   @override
   DartSdk createDartSdk() => AbstractContextTest.SHARED_MOCK_SDK;
 
   @override
   TestSummaryResynthesizer encodeDecodeLibrarySource(Source source) {
     return _encodeLibrary(source);
   }
 }