Make OffscreenCanvas Transferable

third_party/WebKit/Source/bindings/core/v8/SerializationTag.h

 // Copyright 2014 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 SerializationTag_h
 #define SerializationTag_h
 
 namespace blink {
 
 // Serialization format is a sequence of tags followed by zero or more data arguments.
@@ skipping 43 matching lines @@
         //                                        fills it with the last numProperties name,value pairs pushed onto the deserialization stack
     SparseArrayTag = '@', // numProperties:uint32_t, length:uint32_t -> pops the last object from the open stack;
         //                                                              fills it with the last numProperties name,value pairs pushed onto the deserialization stack
     DenseArrayTag = '$', // numProperties:uint32_t, length:uint32_t -> pops the last object from the open stack;
         //                                                             fills it with the last length elements and numProperties name,value pairs pushed onto deserialization stack
     RegExpTag = 'R', // pattern:RawString, flags:uint32_t -> RegExp (ref)
     ArrayBufferTag = 'B', // byteLength:uint32_t, data:byte[byteLength] -> ArrayBuffer (ref)
     ArrayBufferTransferTag = 't', // index:uint32_t -> ArrayBuffer. For ArrayBuffer transfer
     ImageBitmapTag = 'g', // size:uint32_t, data:byte[size] -> ImageBitmap (ref)
     ImageBitmapTransferTag = 'G', // index:uint32_t -> ImageBitmap. For ImageBitmap transfer
+    OffscreenCanvasTransferTag = 'H', // index, width, height, id:uint32_t -> OffscreenCanvas. For OffscreenCanvas transfer
     ArrayBufferViewTag = 'V', // subtag:byte, byteOffset:uint32_t, byteLength:uint32_t -> ArrayBufferView (ref). Consumes an ArrayBuffer from the top of the deserialization stack.
     SharedArrayBufferTransferTag = 'u', // index:uint32_t -> SharedArrayBuffer. For SharedArrayBuffer transfer
     CryptoKeyTag = 'K', // subtag:byte, props, usages:uint32_t, keyDataLength:uint32_t, keyData:byte[keyDataLength]
         //                 If subtag=AesKeyTag:
         //                     props = keyLengthBytes:uint32_t, algorithmId:uint32_t
         //                 If subtag=HmacKeyTag:
         //                     props = keyLengthBytes:uint32_t, hashId:uint32_t
         //                 If subtag=RsaHashedKeyTag:
         //                     props = algorithmId:uint32_t, type:uint32_t, modulusLengthBits:uint32_t, publicExponentLength:uint32_t, publicExponent:byte[publicExponentLength], hashId:uint32_t
         //                 If subtag=EcKeyTag:
@@ skipping 27 matching lines @@
     IntArrayTag = 'd',
     UnsignedIntArrayTag = 'D',
     FloatArrayTag = 'f',
     DoubleArrayTag = 'F',
     DataViewTag = '?'
 };
 
 } // namespace blink
 
 #endif