third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/java/core/src/main/java/com/google/protobuf/InvalidProtocolBufferException.java

Index: third_party/protobuf/java/core/src/main/java/com/google/protobuf/InvalidProtocolBufferException.java
diff --git a/third_party/protobuf/java/core/src/main/java/com/google/protobuf/InvalidProtocolBufferException.java b/third_party/protobuf/java/core/src/main/java/com/google/protobuf/InvalidProtocolBufferException.java
index 85ce7b24ac8a116f876a0cd274368b40219c2a3a..55e33d21d074562639291c6c37f995f978c02c40 100644
--- a/third_party/protobuf/java/core/src/main/java/com/google/protobuf/InvalidProtocolBufferException.java
+++ b/third_party/protobuf/java/core/src/main/java/com/google/protobuf/InvalidProtocolBufferException.java
@@ -107,11 +107,23 @@ public class InvalidProtocolBufferException extends IOException {
       "Protocol message end-group tag did not match expected tag.");
   }
 
-  static InvalidProtocolBufferException invalidWireType() {
-    return new InvalidProtocolBufferException(
+  static InvalidWireTypeException invalidWireType() {
+    return new InvalidWireTypeException(
       "Protocol message tag had invalid wire type.");
   }
 
+  /**
+   * Exception indicating that and unexpected wire type was encountered for a field.
+   */
+  @ExperimentalApi
+  public static class InvalidWireTypeException extends InvalidProtocolBufferException {
+    private static final long serialVersionUID = 3283890091615336259L;
+
+    public InvalidWireTypeException(String description) {
+      super(description);
+    }
+  }
+
   static InvalidProtocolBufferException recursionLimitExceeded() {
     return new InvalidProtocolBufferException(
       "Protocol message had too many levels of nesting.  May be malicious.  " +