Update //third_party/protobuf to version 3.

third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.h

Index: third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.h
diff --git a/third_party/protobuf/src/google/protobuf/compiler/java/java_extension.h b/third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.h
similarity index 67%
copy from third_party/protobuf/src/google/protobuf/compiler/java/java_extension.h
copy to third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.h
index 009ed9ffacaf207d4fb6322dca43697499b32991..e361e639bd6445b57b96261a88bddc3811288dc4 100644
--- a/third_party/protobuf/src/google/protobuf/compiler/java/java_extension.h
+++ b/third_party/protobuf/src/google/protobuf/compiler/objectivec/objectivec_extension.h
@@ -1,6 +1,6 @@
 // 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
@@ -28,50 +28,42 @@
 // (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_JAVA_EXTENSION_H__
-#define GOOGLE_PROTOBUF_COMPILER_JAVA_EXTENSION_H__
-
-#include <string>
+#ifndef GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_EXTENSION_H__
+#define GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_EXTENSION_H__
 
 #include <google/protobuf/stubs/common.h>
 
 namespace google {
 namespace protobuf {
-  class FieldDescriptor;       // descriptor.h
-  namespace io {
-    class Printer;             // printer.h
-  }
+class FieldDescriptor;  // descriptor.h
+namespace io {
+class Printer;  // printer.h
+}
 }
 
 namespace protobuf {
 namespace compiler {
-namespace java {
+namespace objectivec {
 
-// Generates code for an extension, which may be within the scope of some
-// message or may be at file scope.  This is much simpler than FieldGenerator
-// since extensions are just simple identifiers with interesting types.
 class ExtensionGenerator {
  public:
-  explicit ExtensionGenerator(const FieldDescriptor* descriptor);
+  ExtensionGenerator(const string& root_class_name,
+                     const FieldDescriptor* descriptor);
   ~ExtensionGenerator();
 
-  void Generate(io::Printer* printer);
-  void GenerateNonNestedInitializationCode(io::Printer* printer);
-  void GenerateRegistrationCode(io::Printer* printer);
+  void GenerateMembersHeader(io::Printer* printer);
+  void GenerateStaticVariablesInitialization(io::Printer* printer);
+  void GenerateRegistrationSource(io::Printer* printer);
 
  private:
+  string method_name_;
+  string root_class_and_method_name_;
   const FieldDescriptor* descriptor_;
-  string scope_;
+
   GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ExtensionGenerator);
 };
-
-}  // namespace java
+}  // namespace objectivec
 }  // namespace compiler
 }  // namespace protobuf
-
 }  // namespace google
-#endif  // GOOGLE_PROTOBUF_COMPILER_JAVA_MESSAGE_H__
+#endif  // GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_MESSAGE_H__