Remove parseUriWithException() and URISyntaxException.

pkg/analyzer/lib/src/generated/source_io.dart

Index: pkg/analyzer/lib/src/generated/source_io.dart
diff --git a/pkg/analyzer/lib/src/generated/source_io.dart b/pkg/analyzer/lib/src/generated/source_io.dart
index f6af841a4bbf9b3ce95eb843e84996a2440fe4d5..ff39278649eb15b9b1a53883fc45f9219d2cb1c8 100644
--- a/pkg/analyzer/lib/src/generated/source_io.dart
+++ b/pkg/analyzer/lib/src/generated/source_io.dart
@@ -7,7 +7,6 @@ library analyzer.src.generated.source_io;
 import 'dart:collection';
 
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -480,8 +479,8 @@ class PackageUriResolver extends UriResolver {
             String pkgCanonicalUri = _toFileUri(pkgFolder.getCanonicalPath());
             if (sourceUri.startsWith(pkgCanonicalUri)) {
               String relPath = sourceUri.substring(pkgCanonicalUri.length);
-              return parseUriWithException(
-                  "$PACKAGE_SCHEME:${pkgFolder.getName()}$relPath");
+              return Uri
+                  .parse("$PACKAGE_SCHEME:${pkgFolder.getName()}$relPath");
             }
           } catch (e) {}
         }