Update //third_party/protobuf to version 3.

third_party/protobuf/src/google/protobuf/io/printer.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
@@ skipping 65 matching lines @@
   void Print(const char* text);
   // Like the first Print(), except the substitutions are given as parameters.
   void Print(const char* text, const char* variable, const string& value);
   // Like the first Print(), except the substitutions are given as parameters.
   void Print(const char* text, const char* variable1, const string& value1,
                                const char* variable2, const string& value2);
   // Like the first Print(), except the substitutions are given as parameters.
   void Print(const char* text, const char* variable1, const string& value1,
                                const char* variable2, const string& value2,
                                const char* variable3, const string& value3);
-  // TODO(kenton):  Overloaded versions with more variables?  Three seems
-  //   to be enough.
+  // Like the first Print(), except the substitutions are given as parameters.
+  void Print(const char* text, const char* variable1, const string& value1,
+                               const char* variable2, const string& value2,
+                               const char* variable3, const string& value3,
+                               const char* variable4, const string& value4);
+  // Like the first Print(), except the substitutions are given as parameters.
+  void Print(const char* text, const char* variable1, const string& value1,
+                               const char* variable2, const string& value2,
+                               const char* variable3, const string& value3,
+                               const char* variable4, const string& value4,
+                               const char* variable5, const string& value5);
+  // Like the first Print(), except the substitutions are given as parameters.
+  void Print(const char* text, const char* variable1, const string& value1,
+                               const char* variable2, const string& value2,
+                               const char* variable3, const string& value3,
+                               const char* variable4, const string& value4,
+                               const char* variable5, const string& value5,
+                               const char* variable6, const string& value6);
+  // Like the first Print(), except the substitutions are given as parameters.
+  void Print(const char* text, const char* variable1, const string& value1,
+                               const char* variable2, const string& value2,
+                               const char* variable3, const string& value3,
+                               const char* variable4, const string& value4,
+                               const char* variable5, const string& value5,
+                               const char* variable6, const string& value6,
+                               const char* variable7, const string& value7);
+  // Like the first Print(), except the substitutions are given as parameters.
+  void Print(const char* text, const char* variable1, const string& value1,
+                               const char* variable2, const string& value2,
+                               const char* variable3, const string& value3,
+                               const char* variable4, const string& value4,
+                               const char* variable5, const string& value5,
+                               const char* variable6, const string& value6,
+                               const char* variable7, const string& value7,
+                               const char* variable8, const string& value8);
 
   // Indent text by two spaces.  After calling Indent(), two spaces will be
   // inserted at the beginning of each line of text.  Indent() may be called
   // multiple times to produce deeper indents.
   void Indent();
 
   // Reduces the current indent level by two spaces, or crashes if the indent
   // level is zero.
   void Outdent();
 
@@ skipping 26 matching lines @@
   bool failed_;
 
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(Printer);
 };
 
 }  // namespace io
 }  // namespace protobuf
 
 }  // namespace google
 #endif  // GOOGLE_PROTOBUF_IO_PRINTER_H__