Realize IWYU pattern for handles.h header.

src/accessors.h

 // Copyright 2012 the V8 project 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 V8_ACCESSORS_H_
 #define V8_ACCESSORS_H_
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/globals.h"
 #include "src/handles.h"
 #include "src/property-details.h"
 
 namespace v8 {
 namespace internal {
 
+// Forward declarations.
+class ExecutableAccessorInfo;
+
 // The list of accessor descriptors. This is a second-order macro
 // taking a macro to be applied to all accessor descriptor names.
 #define ACCESSOR_INFO_LIST(V)     \
   V(ArgumentsIterator)            \
   V(ArrayLength)                  \
   V(FunctionArguments)            \
   V(FunctionCaller)               \
   V(FunctionName)                 \
   V(FunctionLength)               \
   V(FunctionPrototype)            \
@@ skipping 72 matching lines @@
       PropertyAttributes attributes);
 
   static Handle<ExecutableAccessorInfo> CloneAccessor(
       Isolate* isolate,
       Handle<ExecutableAccessorInfo> accessor);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ACCESSORS_H_