Revert "Switch FE to use the libraries.json format."

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

 // Copyright (c) 2017, 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.
 
 // NOTE: THIS FILE IS GENERATED. DO NOT EDIT.
 //
 // Instead modify 'pkg/front_end/messages.yaml' and run
 // 'pkg/front_end/tool/_fasta/generate_messages.dart' to update.
 
 part of fasta.codes;
@@ skipping 184 matching lines @@
 );
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsCannotReadPackagesFile(String string) {
   return new Message(codeCannotReadPackagesFile,
       message: """Unable to read '.packages' file:
   $string.""", arguments: {'string': string});
 }
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-const Template<Message Function(String string)>
-    templateCannotReadSdkSpecification =
-    const Template<Message Function(String string)>(
-        messageTemplate:
-            r"""Unable to read the 'libraries.json' specification file:
-  #string.""",
-        withArguments: _withArgumentsCannotReadSdkSpecification);
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-const Code<Message Function(String string)> codeCannotReadSdkSpecification =
-    const Code<Message Function(String string)>(
-  "CannotReadSdkSpecification",
-  templateCannotReadSdkSpecification,
-);
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-Message _withArgumentsCannotReadSdkSpecification(String string) {
-  return new Message(codeCannotReadSdkSpecification,
-      message: """Unable to read the 'libraries.json' specification file:
-  $string.""", arguments: {'string': string});
-}
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Code<Null> codeCantInferPackagesFromManyInputs =
     messageCantInferPackagesFromManyInputs;
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const MessageCode messageCantInferPackagesFromManyInputs = const MessageCode(
     "CantInferPackagesFromManyInputs",
     message:
         r"""Can't infer a .packages file when compiling multiple inputs.""",
     tip: r"""Try specifying the file explicitly with the --packages option.""");
 
@@ skipping 2268 matching lines @@
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsSdkRootNotFound(Uri uri_) {
   String uri = relativizeUri(uri_);
   return new Message(codeSdkRootNotFound,
       message: """SDK root directory not found: $uri.""",
       arguments: {'uri': uri_});
 }
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-const Template<
-    Message Function(
-        Uri
-            uri_)> templateSdkSpecificationNotFound = const Template<
-        Message Function(Uri uri_)>(
-    messageTemplate: r"""SDK libraries specification not found: #uri.""",
-    tipTemplate:
-        r"""Normally, the specification is a file named 'libraries.json' in the Dart SDK install location.""",
-    withArguments: _withArgumentsSdkSpecificationNotFound);
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-const Code<Message Function(Uri uri_)> codeSdkSpecificationNotFound =
-    const Code<Message Function(Uri uri_)>(
-  "SdkSpecificationNotFound",
-  templateSdkSpecificationNotFound,
-);
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-Message _withArgumentsSdkSpecificationNotFound(Uri uri_) {
-  String uri = relativizeUri(uri_);
-  return new Message(codeSdkSpecificationNotFound,
-      message: """SDK libraries specification not found: $uri.""",
-      tip:
-          """Normally, the specification is a file named 'libraries.json' in the Dart SDK install location.""",
-      arguments: {'uri': uri_});
-}
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Template<Message Function(Uri uri_)> templateSdkSummaryNotFound =
     const Template<Message Function(Uri uri_)>(
         messageTemplate: r"""SDK summary not found: #uri.""",
         withArguments: _withArgumentsSdkSummaryNotFound);
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Code<Message Function(Uri uri_)> codeSdkSummaryNotFound =
     const Code<Message Function(Uri uri_)>(
   "SdkSummaryNotFound",
   templateSdkSummaryNotFound,
@@ skipping 500 matching lines @@
         r"""'yield' can't be used as an identifier in 'async', 'async*', or 'sync*' methods.""");
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Code<Null> codeYieldNotGenerator = messageYieldNotGenerator;
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const MessageCode messageYieldNotGenerator = const MessageCode(
     "YieldNotGenerator",
     dart2jsCode: "*ignored*",
     message: r"""'yield' can only be used in 'sync*' or 'async*' methods.""");