Update worker mode to use the bazel protos directly instead of json

pkg/analyzer_cli/lib/src/worker_protocol.pb.dart

+///
+//  Generated code. Do not modify.
+///
+library blaze.worker_worker_protocol;
+
+import 'package:protobuf/protobuf.dart';
+
+class Input extends GeneratedMessage {
+  static final BuilderInfo _i = new BuilderInfo('Input')
+    ..a(1, 'path', PbFieldType.OS)
+    ..a(2, 'digest', PbFieldType.OY)
+    ..hasRequiredFields = false
+  ;
+
+  Input() : super();
+  Input.fromBuffer(List<int> i, [ExtensionRegistry r = ExtensionRegistry.EMPTY]) : super.fromBuffer(i, r);
+  Input.fromJson(String i, [ExtensionRegistry r = ExtensionRegistry.EMPTY]) : super.fromJson(i, r);
+  Input clone() => new Input()..mergeFromMessage(this);
+  BuilderInfo get info_ => _i;
+  static Input create() => new Input();
+  static PbList<Input> createRepeated() => new PbList<Input>();
+  static Input getDefault() {
+    if (_defaultInstance == null) _defaultInstance = new _ReadonlyInput();
+    return _defaultInstance;
+  }
+  static Input _defaultInstance;
+  static void $checkItem(Input v) {
+    if (v is !Input) checkItemFailed(v, 'Input');
+  }
+
+  String get path => $_get(0, 1, '');
+  void set path(String v) { $_setString(0, 1, v); }
+  bool hasPath() => $_has(0, 1);
+  void clearPath() => clearField(1);
+
+  List<int> get digest => $_get(1, 2, null);
+  void set digest(List<int> v) { $_setBytes(1, 2, v); }
+  bool hasDigest() => $_has(1, 2);
+  void clearDigest() => clearField(2);
+}
+
+class _ReadonlyInput extends Input with ReadonlyMessageMixin {}
+
+class WorkRequest extends GeneratedMessage {
+  static final BuilderInfo _i = new BuilderInfo('WorkRequest')
+    ..p(1, 'arguments', PbFieldType.PS)
+    ..pp(2, 'inputs', PbFieldType.PM, Input.$checkItem, Input.create)
+    ..hasRequiredFields = false
+  ;
+
+  WorkRequest() : super();
+  WorkRequest.fromBuffer(List<int> i, [ExtensionRegistry r = ExtensionRegistry.EMPTY]) : super.fromBuffer(i, r);
+  WorkRequest.fromJson(String i, [ExtensionRegistry r = ExtensionRegistry.EMPTY]) : super.fromJson(i, r);
+  WorkRequest clone() => new WorkRequest()..mergeFromMessage(this);
+  BuilderInfo get info_ => _i;
+  static WorkRequest create() => new WorkRequest();
+  static PbList<WorkRequest> createRepeated() => new PbList<WorkRequest>();
+  static WorkRequest getDefault() {
+    if (_defaultInstance == null) _defaultInstance = new _ReadonlyWorkRequest();
+    return _defaultInstance;
+  }
+  static WorkRequest _defaultInstance;
+  static void $checkItem(WorkRequest v) {
+    if (v is !WorkRequest) checkItemFailed(v, 'WorkRequest');
+  }
+
+  List<String> get arguments => $_get(0, 1, null);
+
+  List<Input> get inputs => $_get(1, 2, null);
+}
+
+class _ReadonlyWorkRequest extends WorkRequest with ReadonlyMessageMixin {}
+
+class WorkResponse extends GeneratedMessage {
+  static final BuilderInfo _i = new BuilderInfo('WorkResponse')
+    ..a(1, 'exitCode', PbFieldType.O3)
+    ..a(2, 'output', PbFieldType.OS)
+    ..hasRequiredFields = false
+  ;
+
+  WorkResponse() : super();
+  WorkResponse.fromBuffer(List<int> i, [ExtensionRegistry r = ExtensionRegistry.EMPTY]) : super.fromBuffer(i, r);
+  WorkResponse.fromJson(String i, [ExtensionRegistry r = ExtensionRegistry.EMPTY]) : super.fromJson(i, r);
+  WorkResponse clone() => new WorkResponse()..mergeFromMessage(this);
+  BuilderInfo get info_ => _i;
+  static WorkResponse create() => new WorkResponse();
+  static PbList<WorkResponse> createRepeated() => new PbList<WorkResponse>();
+  static WorkResponse getDefault() {
+    if (_defaultInstance == null) _defaultInstance = new _ReadonlyWorkResponse();
+    return _defaultInstance;
+  }
+  static WorkResponse _defaultInstance;
+  static void $checkItem(WorkResponse v) {
+    if (v is !WorkResponse) checkItemFailed(v, 'WorkResponse');
+  }
+
+  int get exitCode => $_get(0, 1, 0);
+  void set exitCode(int v) { $_setUnsignedInt32(0, 1, v); }
+  bool hasExitCode() => $_has(0, 1);
+  void clearExitCode() => clearField(1);
+
+  String get output => $_get(1, 2, '');
+  void set output(String v) { $_setString(1, 2, v); }
+  bool hasOutput() => $_has(1, 2);
+  void clearOutput() => clearField(2);
+}
+
+class _ReadonlyWorkResponse extends WorkResponse with ReadonlyMessageMixin {}
+
+const Input$json = const {
+  '1': 'Input',
+  '2': const [
+    const {'1': 'path', '3': 1, '4': 1, '5': 9},
+    const {'1': 'digest', '3': 2, '4': 1, '5': 12},
+  ],
+};
+
+const WorkRequest$json = const {
+  '1': 'WorkRequest',
+  '2': const [
+    const {'1': 'arguments', '3': 1, '4': 3, '5': 9},
+    const {'1': 'inputs', '3': 2, '4': 3, '5': 11, '6': '.blaze.worker.Input'},
+  ],
+};
+
+const WorkResponse$json = const {
+  '1': 'WorkResponse',
+  '2': const [
+    const {'1': 'exit_code', '3': 1, '4': 1, '5': 5},
+    const {'1': 'output', '3': 2, '4': 1, '5': 9},
+  ],
+};
+