Pull cacheinvalidations code directory into chromium repo.

third_party/cacheinvalidation/src/google/cacheinvalidation/impl/ticl-message-validator.h

Index: third_party/cacheinvalidation/src/google/cacheinvalidation/impl/ticl-message-validator.h
diff --git a/third_party/cacheinvalidation/src/google/cacheinvalidation/impl/ticl-message-validator.h b/third_party/cacheinvalidation/src/google/cacheinvalidation/impl/ticl-message-validator.h
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index 0000000000000000000000000000000000000000..ce0afcbc6fda1a10321e813a93f69768f2f939dd
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+++ b/third_party/cacheinvalidation/src/google/cacheinvalidation/impl/ticl-message-validator.h
@@ -0,0 +1,55 @@
+// Copyright 2012 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Validator for v2 protocol messages.
+
+#ifndef GOOGLE_CACHEINVALIDATION_IMPL_TICL_MESSAGE_VALIDATOR_H_
+#define GOOGLE_CACHEINVALIDATION_IMPL_TICL_MESSAGE_VALIDATOR_H_
+
+#include "google/cacheinvalidation/impl/client-protocol-namespace-fix.h"
+
+namespace invalidation {
+
+class Logger;
+
+class TiclMessageValidator {
+ public:
+  TiclMessageValidator(Logger* logger) : logger_(logger) {}
+
+  // Generic IsValid() method.  Delegates to the private |Validate| helper
+  // method.
+  template<typename T>
+  bool IsValid(const T& message) {
+    bool result = true;
+    Validate(message, &result);
+    return result;
+  }
+
+ private:
+  // Validates a message.  For each type of message to be validated, there
+  // should be a specialization of this method.  Instead of returning a boolean,
+  // the method stores |false| in |*result| if the message is invalid.  Thus,
+  // the caller must initialize |*result| to |true|.  Following this pattern
+  // allows the specific validation methods to be simpler (i.e., a method that
+  // accepts all messages has an empty body instead of having to return |true|).
+  template<typename T>
+  void Validate(const T& message, bool* result);
+
+ private:
+  Logger* logger_;
+};
+
+}  // namespace invalidation
+
+#endif  // GOOGLE_CACHEINVALIDATION_IMPL_TICL_MESSAGE_VALIDATOR_H_