third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/php/src/Google/Protobuf/Internal/MethodOptions_IdempotencyLevel.php

Index: third_party/protobuf/php/src/Google/Protobuf/Internal/MethodOptions_IdempotencyLevel.php
diff --git a/third_party/protobuf/php/src/Google/Protobuf/Internal/MethodOptions_IdempotencyLevel.php b/third_party/protobuf/php/src/Google/Protobuf/Internal/MethodOptions_IdempotencyLevel.php
new file mode 100644
index 0000000000000000000000000000000000000000..62768b5ce07c5b31e8e57421d2dc694d36b005c0
--- /dev/null
+++ b/third_party/protobuf/php/src/Google/Protobuf/Internal/MethodOptions_IdempotencyLevel.php
@@ -0,0 +1,39 @@
+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: google/protobuf/descriptor.proto
+
+/**
+ * <pre>
+ * Is this method side-effect-free (or safe in HTTP parlance), or idempotent,
+ * or neither? HTTP based RPC implementation may choose GET verb for safe
+ * methods, and PUT verb for idempotent methods instead of the default POST.
+ * </pre>
+ *
+ * Protobuf enum <code>google.protobuf.MethodOptions.IdempotencyLevel</code>
+ */
+namespace Google\Protobuf\Internal;
+
+class MethodOptions_IdempotencyLevel
+{
+    /**
+     * <code>IDEMPOTENCY_UNKNOWN = 0;</code>
+     */
+    const IDEMPOTENCY_UNKNOWN = 0;
+    /**
+     * <pre>
+     * implies idempotent
+     * </pre>
+     *
+     * <code>NO_SIDE_EFFECTS = 1;</code>
+     */
+    const NO_SIDE_EFFECTS = 1;
+    /**
+     * <pre>
+     * idempotent, but may have side effects
+     * </pre>
+     *
+     * <code>IDEMPOTENT = 2;</code>
+     */
+    const IDEMPOTENT = 2;
+}
+