Pull new version of protobuf sources.

third_party/protobuf/src/google/protobuf/api.proto

Index: third_party/protobuf/src/google/protobuf/api.proto
diff --git a/third_party/protobuf/src/google/protobuf/api.proto b/third_party/protobuf/src/google/protobuf/api.proto
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+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+syntax = "proto3";
+
+package google.protobuf;
+
+import "google/protobuf/source_context.proto";
+import "google/protobuf/type.proto";
+
+option java_multiple_files = true;
+option java_outer_classname = "ApiProto";
+option java_package = "com.google.protobuf";
+option csharp_namespace = "Google.Protobuf.WellKnownTypes";
+option objc_class_prefix = "GPB";
+
+
+// Api is a light-weight descriptor for a protocol buffer service.
+message Api {
+  // The fully qualified name of this api, including package name
+  // followed by the api's simple name.
+  string name = 1;
+
+  // The methods of this api, in unspecified order.
+  repeated Method methods = 2;
+
+  // Any metadata attached to the API.
+  repeated Option options = 3;
+
+  // A version string for this api. If specified, must have the form
+  // `major-version.minor-version`, as in `1.10`. If the minor version
+  // is omitted, it defaults to zero. If the entire version field is
+  // empty, the major version is derived from the package name, as
+  // outlined below. If the field is not empty, the version in the
+  // package name will be verified to be consistent with what is
+  // provided here.
+  //
+  // The versioning schema uses [semantic
+  // versioning](http://semver.org) where the major version number
+  // indicates a breaking change and the minor version an additive,
+  // non-breaking change. Both version numbers are signals to users
+  // what to expect from different versions, and should be carefully
+  // chosen based on the product plan.
+  //
+  // The major version is also reflected in the package name of the
+  // API, which must end in `v<major-version>`, as in
+  // `google.feature.v1`. For major versions 0 and 1, the suffix can
+  // be omitted. Zero major versions must only be used for
+  // experimental, none-GA apis.
+  //
+  // See also: [design doc](http://go/api-versioning).
+  //
+  //
+  string version = 4;
+
+  // Source context for the protocol buffer service represented by this
+  // message.
+  SourceContext source_context = 5;
+}
+
+// Method represents a method of an api.
+message Method {
+  // The simple name of this method.
+  string name = 1;
+
+  // A URL of the input message type.
+  string request_type_url = 2;
+
+  // If true, the request is streamed.
+  bool request_streaming = 3;
+
+  // The URL of the output message type.
+  string response_type_url = 4;
+
+  // If true, the response is streamed.
+  bool response_streaming = 5;
+
+  // Any metadata attached to the method.
+  repeated Option options = 6;
+}