Update //third_party/protobuf to version 3.

third_party/protobuf/java/src/test/java/com/google/protobuf/lite_equals_and_hash.proto

Index: third_party/protobuf/java/src/test/java/com/google/protobuf/lite_equals_and_hash.proto
diff --git a/third_party/protobuf/src/google/protobuf/unittest_import_lite.proto b/third_party/protobuf/java/src/test/java/com/google/protobuf/lite_equals_and_hash.proto
similarity index 68%
copy from third_party/protobuf/src/google/protobuf/unittest_import_lite.proto
copy to third_party/protobuf/java/src/test/java/com/google/protobuf/lite_equals_and_hash.proto
index 81b117fe8489ecc4cba5410dbf876b4ca473657b..86837250580af4232889dafbd4870936098d4556 100644
--- a/third_party/protobuf/src/google/protobuf/unittest_import_lite.proto
+++ b/third_party/protobuf/java/src/test/java/com/google/protobuf/lite_equals_and_hash.proto
@@ -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
@@ -28,24 +28,45 @@
 // (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)
-//
-// This is like unittest_import.proto but with optimize_for = LITE_RUNTIME.
+// Author: pbogle@google.com (Phil Bogle)
+
+syntax = "proto2";
 
-package protobuf_unittest_import;
+package protobuf_unittest.lite_equals_and_hash;
 
+// This proto definition is used to test that java_generate_equals_and_hash
+// works correctly with the LITE_RUNTIME.
+option java_generate_equals_and_hash = true;
 option optimize_for = LITE_RUNTIME;
 
-option java_package = "com.google.protobuf";
+message Foo {
+  optional int32 value = 1;
+  repeated Bar bar = 2;
 
-import public "google/protobuf/unittest_import_public_lite.proto";
+  extensions 100 to max;
+}
 
-message ImportMessageLite {
-  optional int32 d = 1;
+message Bar {
+  extend Foo {
+    optional Bar foo_ext = 100;
+  }
+
+  optional string name = 1;
 }
 
-enum ImportEnumLite {
-  IMPORT_LITE_FOO = 7;
-  IMPORT_LITE_BAR = 8;
-  IMPORT_LITE_BAZ = 9;
+message BarPrime {
+  optional string name = 1;
 }
+
+message Empty {
+}
+
+extend Foo {
+  optional int32 varint = 101;
+  optional fixed32 fixed32 = 102;
+  optional fixed64 fixed64 = 103;
+  optional group MyGroup = 104 {
+    optional string group_value = 1;
+  }
+}
+