Update //third_party/protobuf to version 3.

third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_map_field.h

 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
-// http://code.google.com/p/protobuf/
+// 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.
 
-// Author: kenton@google.com (Kenton Varda)
-//  Based on original Protocol Buffers design by
-//  Sanjay Ghemawat, Jeff Dean, and others.
-
-#ifndef GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_FIELD_H__
-#define GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_FIELD_H__
+#ifndef GOOGLE_PROTOBUF_COMPILER_CPP_MAP_FIELD_H__
+#define GOOGLE_PROTOBUF_COMPILER_CPP_MAP_FIELD_H__
 
 #include <map>
 #include <string>
-#include <google/protobuf/compiler/cpp/cpp_field.h>
+
+#include <google/protobuf/compiler/cpp/cpp_message_field.h>
 
 namespace google {
 namespace protobuf {
 namespace compiler {
 namespace cpp {
 
-class MessageFieldGenerator : public FieldGenerator {
+class MapFieldGenerator : public FieldGenerator {
  public:
-  explicit MessageFieldGenerator(const FieldDescriptor* descriptor,
-                                 const Options& options);
-  ~MessageFieldGenerator();
+  explicit MapFieldGenerator(const FieldDescriptor* descriptor,
+                             const Options& options);
+  ~MapFieldGenerator();
 
   // implements FieldGenerator ---------------------------------------
   void GeneratePrivateMembers(io::Printer* printer) const;
   void GenerateAccessorDeclarations(io::Printer* printer) const;
-  void GenerateInlineAccessorDefinitions(io::Printer* printer) const;
+  void GenerateInlineAccessorDefinitions(io::Printer* printer,
+                                         bool is_inline) const;
   void GenerateClearingCode(io::Printer* printer) const;
   void GenerateMergingCode(io::Printer* printer) const;
   void GenerateSwappingCode(io::Printer* printer) const;
-  void GenerateConstructorCode(io::Printer* printer) const;
-  void GenerateMergeFromCodedStream(io::Printer* printer) const;
-  void GenerateSerializeWithCachedSizes(io::Printer* printer) const;
-  void GenerateSerializeWithCachedSizesToArray(io::Printer* printer) const;
-  void GenerateByteSize(io::Printer* printer) const;
-
- private:
-  const FieldDescriptor* descriptor_;
-  map<string, string> variables_;
-
-  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(MessageFieldGenerator);
-};
-
-class RepeatedMessageFieldGenerator : public FieldGenerator {
- public:
-  explicit RepeatedMessageFieldGenerator(const FieldDescriptor* descriptor,
-                                         const Options& options);
-  ~RepeatedMessageFieldGenerator();
-
-  // implements FieldGenerator ---------------------------------------
-  void GeneratePrivateMembers(io::Printer* printer) const;
-  void GenerateAccessorDeclarations(io::Printer* printer) const;
-  void GenerateInlineAccessorDefinitions(io::Printer* printer) const;
-  void GenerateClearingCode(io::Printer* printer) const;
-  void GenerateMergingCode(io::Printer* printer) const;
-  void GenerateSwappingCode(io::Printer* printer) const;
   void GenerateConstructorCode(io::Printer* printer) const;
   void GenerateMergeFromCodedStream(io::Printer* printer) const;
   void GenerateSerializeWithCachedSizes(io::Printer* printer) const;
   void GenerateSerializeWithCachedSizesToArray(io::Printer* printer) const;
   void GenerateByteSize(io::Printer* printer) const;
 
  private:
   const FieldDescriptor* descriptor_;
+  const bool dependent_field_;
   map<string, string> variables_;
 
-  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(RepeatedMessageFieldGenerator);
+  GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(MapFieldGenerator);
 };
 
 }  // namespace cpp
 }  // namespace compiler
 }  // namespace protobuf
 
 }  // namespace google
-#endif  // GOOGLE_PROTOBUF_COMPILER_CPP_MESSAGE_FIELD_H__
+#endif  // GOOGLE_PROTOBUF_COMPILER_CPP_MAP_FIELD_H__