Move forward rolling FE public APIS (make bots green)

tools/patch_sdk.dart

 #!/usr/bin/env dart
 // Copyright (c) 2015, 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.
 
 /// Command line tool to merge the SDK libraries and our patch files.
 /// This is currently designed as an offline tool, but we could automate it.
 
 import 'dart:io';
 import 'dart:isolate' show RawReceivePort;
@@ skipping 125 matching lines @@
 
   if (forVm) {
     // TODO(sigmund): add support for the flutter vmservice_sky as well.
     var vmserviceName = 'vmservice_io';
     var base = path.fromUri(Platform.script);
     Uri dartDir =
         new Uri.directory(path.dirname(path.dirname(path.absolute(base))));
     var program = await kernelForProgram(
         Uri.parse('dart:$vmserviceName'),
         new CompilerOptions()
-          ..sdkSummary = outline
+          // TODO(sigmund): investigate. This should be outline, but it breaks
+          // vm-debug tests. Issue #30111
+          ..sdkSummary = platform
           ..dartLibraries = <String, Uri>{
             '_vmservice': dartDir.resolve('sdk/lib/vmservice/vmservice.dart'),
             'vmservice_io':
                 dartDir.resolve('runtime/bin/vmservice/vmservice_io.dart'),
           }
           ..packagesFileUri = packages);
     Uri vmserviceUri = outDirUri.resolve('$vmserviceName.dill');
+    // TODO(sigmund): remove. This is a workaround because in the VM
+    // doesn't support loading vmservice if it contains external libraries
+    // (there is an assertion that only fails in debug builds). Issue #30111
+    program.libraries.forEach((l) => l.isExternal = false);
     await writeProgramToFile(program, vmserviceUri);
   }
 
   Uri platformFinalLocation = outDirUri.resolve('platform.dill');
 
   // We generate a dependency file for GN to properly regenerate the patched sdk
   // folder, outline.dill and platform.dill files when necessary: either when
   // the sdk sources change or when this script is updated. In particular:
   //
   //  - sdk changes: we track the actual sources we are compiling. If we are
@@ skipping 569 matching lines @@
     if (diff != 0) return diff;
     return end - other.end;
   }
 }
 
 List<SdkLibrary> _getSdkLibraries(String contents) {
   var libraryBuilder = new SdkLibrariesReader_LibraryBuilder(forDart2js);
   parseCompilationUnit(contents).accept(libraryBuilder);
   return libraryBuilder.librariesMap.sdkLibraries;
 }