Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/src/google/protobuf/duration.proto

Index: third_party/protobuf/src/google/protobuf/duration.proto
diff --git a/third_party/protobuf/src/google/protobuf/duration.proto b/third_party/protobuf/src/google/protobuf/duration.proto
deleted file mode 100644
index 0762c3c281cb5402dd98530f29ab820598c29b68..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/duration.proto
+++ /dev/null
@@ -1,94 +0,0 @@
-// 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;
-
-option java_generate_equals_and_hash = true;
-option java_multiple_files = true;
-option java_outer_classname = "DurationProto";
-option java_package = "com.google.protobuf";
-option csharp_namespace = "Google.Protobuf.WellKnownTypes";
-option objc_class_prefix = "GPB";
-
-// A Duration represents a signed, fixed-length span of time represented
-// as a count of seconds and fractions of seconds at nanosecond
-// resolution. It is independent of any calendar and concepts like "day"
-// or "month". It is related to Timestamp in that the difference between
-// two Timestamp values is a Duration and it can be added or subtracted
-// from a Timestamp. Range is approximately +-10,000 years.
-//
-// Example 1: Compute Duration from two Timestamps in pseudo code.
-//
-//     Timestamp start = ...;
-//     Timestamp end = ...;
-//     Duration duration = ...;
-//
-//     duration.seconds = end.seconds - start.seconds;
-//     duration.nanos = end.nanos - start.nanos;
-//
-//     if (duration.seconds < 0 && duration.nanos > 0) {
-//       duration.seconds += 1;
-//       duration.nanos -= 1000000000;
-//     } else if (durations.seconds > 0 && duration.nanos < 0) {
-//       duration.seconds -= 1;
-//       duration.nanos += 1000000000;
-//     }
-//
-// Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.
-//
-//     Timestamp start = ...;
-//     Duration duration = ...;
-//     Timestamp end = ...;
-//
-//     end.seconds = start.seconds + duration.seconds;
-//     end.nanos = start.nanos + duration.nanos;
-//
-//     if (end.nanos < 0) {
-//       end.seconds -= 1;
-//       end.nanos += 1000000000;
-//     } else if (end.nanos >= 1000000000) {
-//       end.seconds += 1;
-//       end.nanos -= 1000000000;
-//     }
-//
-message Duration {
-  // Signed seconds of the span of time. Must be from -315,576,000,000
-  // to +315,576,000,000 inclusive.
-  int64 seconds = 1;
-
-  // Signed fractions of a second at nanosecond resolution of the span
-  // of time. Durations less than one second are represented with a 0
-  // `seconds` field and a positive or negative `nanos` field. For durations
-  // of one second or more, a non-zero value for the `nanos` field must be
-  // of the same sign as the `seconds` field. Must be from -999,999,999
-  // to +999,999,999 inclusive.
-  int32 nanos = 2;
-}