Mojo C++ bindings: more consistent Clone() and Equals().

mojo/public/cpp/bindings/lib/array_internal.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_ARRAY_INTERNAL_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_ARRAY_INTERNAL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <new>
 #include <utility>
 #include <vector>
 
 #include "base/logging.h"
 #include "mojo/public/c/system/macros.h"
 #include "mojo/public/cpp/bindings/lib/bindings_internal.h"
 #include "mojo/public/cpp/bindings/lib/bounds_checker.h"
 #include "mojo/public/cpp/bindings/lib/buffer.h"
-#include "mojo/public/cpp/bindings/lib/map_data_internal.h"
 #include "mojo/public/cpp/bindings/lib/serialization_util.h"
 #include "mojo/public/cpp/bindings/lib/template_util.h"
 #include "mojo/public/cpp/bindings/lib/validate_params.h"
 #include "mojo/public/cpp/bindings/lib/validation_errors.h"
+#include "mojo/public/cpp/bindings/lib/validation_util.h"
 
 namespace mojo {
 namespace internal {
 
 // std::numeric_limits<uint32_t>::max() is not a compile-time constant (until
 // C++11).
 const uint32_t kMaxUint32 = 0xFFFFFFFF;
 
+template <typename K, typename V>
+class Map_Data;
+
 std::string MakeMessageWithArrayIndex(const char* message,
                                       size_t size,
                                       size_t index);
 
 std::string MakeMessageWithExpectedArraySize(const char* message,
                                              size_t size,
                                              size_t expected_size);
 
 template <typename T>
 struct ArrayDataTraits {
@@ skipping 362 matching lines @@
 };
 static_assert(sizeof(Array_Data<char>) == 8, "Bad sizeof(Array_Data)");
 
 // UTF-8 encoded
 using String_Data = Array_Data<char>;
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_ARRAY_INTERNAL_H_