[DevTools] Generate separate copies of inspector_protocol.

third_party/WebKit/Source/platform/v8_inspector/Allocator.h

 // Copyright 2016 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 Allocator_h
 #define Allocator_h
 
+#include <cstddef>
+#include <cstdint>
+
 enum NotNullTagEnum { NotNullLiteral };
 
-#define PROTOCOL_DISALLOW_NEW()                                 \
+#define V8_INSPECTOR_DISALLOW_NEW()                             \
     private:                                                    \
         void* operator new(size_t) = delete;                    \
         void* operator new(size_t, NotNullTagEnum, void*) = delete; \
         void* operator new(size_t, void*) = delete;             \
     public:
 
-#define PROTOCOL_DISALLOW_COPY(ClassName) \
+#define V8_INSPECTOR_DISALLOW_COPY(ClassName) \
     private: \
         ClassName(const ClassName&) = delete; \
         ClassName& operator=(const ClassName&) = delete
 
-#endif /* Allocator_h */
+// Macro that returns a compile time constant with the length of an array, but gives an error if passed a non-array.
+template<typename T, std::size_t Size> char (&ArrayLengthHelperFunction(T (&)[Size]))[Size];
+// GCC needs some help to deduce a 0 length array.
+#if defined(__GNUC__)
+template<typename T> char (&ArrayLengthHelperFunction(T (&)[0]))[0];
+#endif
+#define V8_INSPECTOR_ARRAY_LENGTH(array) sizeof(::ArrayLengthHelperFunction(array))
+
+#endif // !defined(Allocator_h)