Update //third_party/protobuf to version 3.

third_party/protobuf/java/src/main/java/com/google/protobuf/ServiceException.java

Index: third_party/protobuf/java/src/main/java/com/google/protobuf/ServiceException.java
diff --git a/third_party/protobuf/src/google/protobuf/unittest_import_public.proto b/third_party/protobuf/java/src/main/java/com/google/protobuf/ServiceException.java
similarity index 74%
copy from third_party/protobuf/src/google/protobuf/unittest_import_public.proto
copy to third_party/protobuf/java/src/main/java/com/google/protobuf/ServiceException.java
index ea5d1b13fea77a432cecc0980664c020159d108a..00d5707523523cb3620a764b9fd36cf753797549 100644
--- a/third_party/protobuf/src/google/protobuf/unittest_import_public.proto
+++ b/third_party/protobuf/java/src/main/java/com/google/protobuf/ServiceException.java
@@ -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
@@ -28,13 +28,25 @@
 // (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: liujisi@google.com (Pherl Liu)
+package com.google.protobuf;
 
+/**
+ * Thrown by blocking RPC methods when a failure occurs.
+ *
+ * @author cpovirk@google.com (Chris Povirk)
+ */
+public class ServiceException extends Exception {
+  private static final long serialVersionUID = -1219262335729891920L;
 
-package protobuf_unittest_import;
+  public ServiceException(final String message) {
+    super(message);
+  }
 
-option java_package = "com.google.protobuf.test";
+  public ServiceException(final Throwable cause) {
+    super(cause);
+  }
 
-message PublicImportMessage {
-  optional int32 e = 1;
+  public ServiceException(final String message, final Throwable cause) {
+    super(message, cause);
+  }
 }