support resolving .packages in FE

pkg/front_end/lib/src/fasta/fasta_codes_generated.dart

Index: pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
diff --git a/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart b/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
index 84b22e30868d1e9989ec9c30ffd4aae24d4f58a7..7d024f3bfbb18665b65d3729bb2cd23834ed060b 100644
--- a/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
+++ b/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
@@ -1561,6 +1561,28 @@ const MessageCode messageInvalidInlineFunctionType = const MessageCode(
     tip:
         r"""Try changing the inline function type (as in 'int f()') to a prefixed function type using the `Function` keyword (as in 'int Function() f').""");
 
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Template<Message Function(Uri uri_, String string)>
+    templateInvalidPackagesFile =
+    const Template<Message Function(Uri uri_, String string)>(
+        messageTemplate: r"""Invalid .packages file '#uri':
+  #string.""", withArguments: _withArgumentsInvalidPackagesFile);
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Message Function(Uri uri_, String string)> codeInvalidPackagesFile =
+    const Code<Message Function(Uri uri_, String string)>(
+  "InvalidPackagesFile",
+  templateInvalidPackagesFile,
+);
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+Message _withArgumentsInvalidPackagesFile(Uri uri_, String string) {
+  String uri = relativizeUri(uri_);
+  return new Message(codeInvalidPackagesFile,
+      message: """Invalid .packages file '$uri':
+  $string.""", arguments: {'uri': uri_, 'string': string});
+}
+
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Code<Null> codeInvalidSyncModifier = messageInvalidSyncModifier;
 
@@ -1708,6 +1730,13 @@ Message _withArgumentsMissingInputFile(String string) {
       arguments: {'string': string});
 }
 
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const Code<Null> codeMissingInputs = messageMissingInputs;
+
+// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
+const MessageCode messageMissingInputs = const MessageCode("MissingInputs",
+    message: r"""No input files provided to the compiler.""");
+
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Code<Null> codeMissingMain = messageMissingMain;