ValueSerializer: Expose reading/writing doubles to embedder.

include/v8.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.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 1771 matching lines @@
   void TransferSharedArrayBuffer(uint32_t transfer_id,
                                  Local<SharedArrayBuffer> shared_array_buffer);
 
   /*
    * Write raw data in various common formats to the buffer.
    * Note that integer types are written in base-128 varint format, not with a
    * binary copy. For use during an override of Delegate::WriteHostObject.
    */
   void WriteUint32(uint32_t value);
   void WriteUint64(uint64_t value);
+  void WriteDouble(double value);
   void WriteRawBytes(const void* source, size_t length);
 
  private:
   ValueSerializer(const ValueSerializer&) = delete;
   void operator=(const ValueSerializer&) = delete;
 
   struct PrivateData;
   PrivateData* private_;
 };
 
@@ skipping 66 matching lines @@
    */
   uint32_t GetWireFormatVersion() const;
 
   /*
    * Reads raw data in various common formats to the buffer.
    * Note that integer types are read in base-128 varint format, not with a
    * binary copy. For use during an override of Delegate::ReadHostObject.
    */
   V8_WARN_UNUSED_RESULT bool ReadUint32(uint32_t* value);
   V8_WARN_UNUSED_RESULT bool ReadUint64(uint64_t* value);
+  V8_WARN_UNUSED_RESULT bool ReadDouble(double* value);
   V8_WARN_UNUSED_RESULT bool ReadRawBytes(size_t length, const void** data);
 
  private:
   ValueDeserializer(const ValueDeserializer&) = delete;
   void operator=(const ValueDeserializer&) = delete;
 
   struct PrivateData;
   PrivateData* private_;
 };
 
@@ skipping 7761 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_