Revert "third_party/protobuf: Update to HEAD (83d681ee2c)"

third_party/protobuf/java/core/src/test/java/com/google/protobuf/ParseExceptionsTest.java

 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
 // 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.
@@ skipping 18 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package com.google.protobuf;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
 import com.google.protobuf.DescriptorProtos.DescriptorProto;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.FilterInputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.JUnit4;
 
 /**
  * Tests the exceptions thrown when parsing from a stream. The methods on the {@link Parser}
  * interface are specified to only throw {@link InvalidProtocolBufferException}. But we really want
  * to distinguish between invalid protos vs. actual I/O errors (like failures reading from a
  * socket, etc.). So, when we're not using the parser directly, an {@link IOException} should be
  * thrown where appropriate, instead of always an {@link InvalidProtocolBufferException}.
  *
  * @author jh@squareup.com (Joshua Humphries)
  */
@@ skipping 205 matching lines @@
 
       @Override public int read(byte b[], int off, int len) throws IOException {
         if ((count += len) >= 50) {
           throw new IOException("I'm broken!");
         }
         return super.read(b, off, len);
       }
     };
   }
 }