Update //third_party/protobuf to version 3.

third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/ValuePartial.cs

Index: third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/ValuePartial.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/ValuePartial.cs b/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/ValuePartial.cs
new file mode 100644
index 0000000000000000000000000000000000000000..b4b6c05e87c18e7abc1ac4e0b96b09a7a546db6f
--- /dev/null
+++ b/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/ValuePartial.cs
@@ -0,0 +1,99 @@
+#region Copyright notice and license
+// 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.
+#endregion
+
+namespace Google.Protobuf.WellKnownTypes
+{
+    public partial class Value
+    {
+        /// <summary>
+        /// Convenience method to create a Value message with a string value.
+        /// </summary>
+        /// <param name="value">Value to set for the StringValue property.</param>
+        /// <returns>A newly-created Value message with the given value.</returns>
+        public static Value ForString(string value)
+        {
+            Preconditions.CheckNotNull(value, "value");
+            return new Value { StringValue = value };
+        }
+
+        /// <summary>
+        /// Convenience method to create a Value message with a number value.
+        /// </summary>
+        /// <param name="value">Value to set for the NumberValue property.</param>
+        /// <returns>A newly-created Value message with the given value.</returns>
+        public static Value ForNumber(double value)
+        {
+            return new Value { NumberValue = value };
+        }
+
+        /// <summary>
+        /// Convenience method to create a Value message with a Boolean value.
+        /// </summary>
+        /// <param name="value">Value to set for the BoolValue property.</param>
+        /// <returns>A newly-created Value message with the given value.</returns>
+        public static Value ForBool(bool value)
+        {
+            return new Value { BoolValue = value };
+        }
+
+        /// <summary>
+        /// Convenience method to create a Value message with a null initial value.
+        /// </summary>
+        /// <returns>A newly-created Value message a null initial value.</returns>
+        public static Value ForNull()
+        {
+            return new Value { NullValue = 0 };
+        }
+
+        /// <summary>
+        /// Convenience method to create a Value message with an initial list of values.
+        /// </summary>
+        /// <remarks>The values provided are not cloned; the references are copied directly.</remarks>
+        /// <returns>A newly-created Value message an initial list value.</returns>
+        public static Value ForList(params Value[] values)
+        {
+            Preconditions.CheckNotNull(values, "values");
+            return new Value { ListValue = new ListValue { Values = { values } } };
+        }
+
+        /// <summary>
+        /// Convenience method to create a Value message with an initial struct value
+        /// </summary>
+        /// <remarks>The value provided is not cloned; the reference is copied directly.</remarks>
+        /// <returns>A newly-created Value message an initial struct value.</returns>
+        public static Value ForStruct(Struct value)
+        {
+            Preconditions.CheckNotNull(value, "value");
+            return new Value { StructValue = value };
+        }
+    }
+}