bindings: preparation for fixing incorrect dependency of SerializedScriptValue.

Source/bindings/core/v8/SerializationTag.h

Index: Source/bindings/core/v8/SerializationTag.h
diff --git a/Source/bindings/core/v8/SerializationTag.h b/Source/bindings/core/v8/SerializationTag.h
new file mode 100644
index 0000000000000000000000000000000000000000..bcbb6db71d9aa7c1726292b1d442cde7e3b8a0ac
--- /dev/null
+++ b/Source/bindings/core/v8/SerializationTag.h
@@ -0,0 +1,158 @@
+// 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 {
+
+namespace SerializedScriptValueInternal {
+
+// Serialization format is a sequence of tags followed by zero or more data arguments.
+// Tags always take exactly one byte. A serialized stream first begins with
+// a complete VersionTag. If the stream does not begin with a VersionTag, we assume that
+// the stream is in format 0.
+
+// This format is private to the implementation of SerializedScriptValue. Do not rely on it
+// externally. It is safe to persist a SerializedScriptValue as a binary blob, but this
+// code should always be used to interpret it.
+
+// WebCoreStrings are read as (length:uint32_t, string:UTF8[length]).
+// RawStrings are read as (length:uint32_t, string:UTF8[length]).
+// RawUCharStrings are read as (length:uint32_t, string:UChar[length/sizeof(UChar)]).
+// RawFiles are read as (path:WebCoreString, url:WebCoreStrng, type:WebCoreString).
+// There is a reference table that maps object references (uint32_t) to v8::Values.
+// Tokens marked with (ref) are inserted into the reference table and given the next object reference ID after decoding.
+// All tags except InvalidTag, PaddingTag, ReferenceCountTag, VersionTag, GenerateFreshObjectTag
+//     and GenerateFreshArrayTag push their results to the deserialization stack.
+// There is also an 'open' stack that is used to resolve circular references. Objects or arrays may
+//     contain self-references. Before we begin to deserialize the contents of these values, they
+//     are first given object reference IDs (by GenerateFreshObjectTag/GenerateFreshArrayTag);
+//     these reference IDs are then used with ObjectReferenceTag to tie the recursive knot.
+enum SerializationTag {
+    InvalidTag = '!', // Causes deserialization to fail.
+    PaddingTag = '\0', // Is ignored (but consumed).
+    UndefinedTag = '_', // -> <undefined>
+    NullTag = '0', // -> <null>
+    TrueTag = 'T', // -> <true>
+    FalseTag = 'F', // -> <false>
+    StringTag = 'S', // string:RawString -> string
+    StringUCharTag = 'c', // string:RawUCharString -> string
+    Int32Tag = 'I', // value:ZigZag-encoded int32 -> Integer
+    Uint32Tag = 'U', // value:uint32_t -> Integer
+    DateTag = 'D', // value:double -> Date (ref)
+    MessagePortTag = 'M', // index:int -> MessagePort. Fills the result with transferred MessagePort.
+    NumberTag = 'N', // value:double -> Number
+    BlobTag = 'b', // uuid:WebCoreString, type:WebCoreString, size:uint64_t -> Blob (ref)
+    BlobIndexTag = 'i', // index:int32_t -> Blob (ref)
+    FileTag = 'f', // file:RawFile -> File (ref)
+    FileIndexTag = 'e', // index:int32_t -> File (ref)
+    DOMFileSystemTag = 'd', // type:int32_t, name:WebCoreString, uuid:WebCoreString -> FileSystem (ref)
+    FileListTag = 'l', // length:uint32_t, files:RawFile[length] -> FileList (ref)
+    FileListIndexTag = 'L', // length:uint32_t, files:int32_t[length] -> FileList (ref)
+    ImageDataTag = '#', // width:uint32_t, height:uint32_t, pixelDataLength:uint32_t, data:byte[pixelDataLength] -> ImageData (ref)
+    ObjectTag = '{', // numProperties:uint32_t -> pops the last object from the open stack;
+        //                                        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
+    ArrayBufferViewTag = 'V', // subtag:byte, byteOffset:uint32_t, byteLength:uint32_t -> ArrayBufferView (ref). Consumes an ArrayBuffer from the top of the deserialization stack.
+    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:
+        //                     props = algorithmId:uint32_t, type:uint32_t, namedCurve:uint32_t
+    ObjectReferenceTag = '^', // ref:uint32_t -> reference table[ref]
+    GenerateFreshObjectTag = 'o', // -> empty object allocated an object ID and pushed onto the open stack (ref)
+    GenerateFreshSparseArrayTag = 'a', // length:uint32_t -> empty array[length] allocated an object ID and pushed onto the open stack (ref)
+    GenerateFreshDenseArrayTag = 'A', // length:uint32_t -> empty array[length] allocated an object ID and pushed onto the open stack (ref)
+    ReferenceCountTag = '?', // refTableSize:uint32_t -> If the reference table is not refTableSize big, fails.
+    StringObjectTag = 's', //  string:RawString -> new String(string) (ref)
+    NumberObjectTag = 'n', // value:double -> new Number(value) (ref)
+    TrueObjectTag = 'y', // new Boolean(true) (ref)
+    FalseObjectTag = 'x', // new Boolean(false) (ref)
+    VersionTag = 0xFF // version:uint32_t -> Uses this as the file version.
+};
+
+enum ArrayBufferViewSubTag {
+    ByteArrayTag = 'b',
+    UnsignedByteArrayTag = 'B',
+    UnsignedByteClampedArrayTag = 'C',
+    ShortArrayTag = 'w',
+    UnsignedShortArrayTag = 'W',
+    IntArrayTag = 'd',
+    UnsignedIntArrayTag = 'D',
+    FloatArrayTag = 'f',
+    DoubleArrayTag = 'F',
+    DataViewTag = '?'
+};
+
+enum CryptoKeySubTag {
+    AesKeyTag = 1,
+    HmacKeyTag = 2,
+    // ID 3 was used by RsaKeyTag, while still behind experimental flag.
+    RsaHashedKeyTag = 4,
+    EcKeyTag = 5,
+    // Maximum allowed value is 255
+};
+
+enum AssymetricCryptoKeyType {
+    PublicKeyType = 1,
+    PrivateKeyType = 2,
+    // Maximum allowed value is 2^32-1
+};
+
+enum CryptoKeyAlgorithmTag {
+    AesCbcTag = 1,
+    HmacTag = 2,
+    RsaSsaPkcs1v1_5Tag = 3,
+    // ID 4 was used by RsaEs, while still behind experimental flag.
+    Sha1Tag = 5,
+    Sha256Tag = 6,
+    Sha384Tag = 7,
+    Sha512Tag = 8,
+    AesGcmTag = 9,
+    RsaOaepTag = 10,
+    AesCtrTag = 11,
+    AesKwTag = 12,
+    RsaPssTag = 13,
+    EcdsaTag = 14,
+    // Maximum allowed value is 2^32-1
+};
+
+enum NamedCurveTag {
+    P256Tag = 1,
+    P384Tag = 2,
+    P521Tag = 3,
+};
+
+enum CryptoKeyUsage {
+    // Extractability is not a "usage" in the WebCryptoKeyUsages sense, however
+    // it fits conveniently into this bitfield.
+    ExtractableUsage = 1 << 0,
+
+    EncryptUsage = 1 << 1,
+    DecryptUsage = 1 << 2,
+    SignUsage = 1 << 3,
+    VerifyUsage = 1 << 4,
+    DeriveKeyUsage = 1 << 5,
+    WrapKeyUsage = 1 << 6,
+    UnwrapKeyUsage = 1 << 7,
+    DeriveBitsUsage = 1 << 8,
+    // Maximum allowed value is 1 << 31
+};
+
+} // namespace SerializedScriptValueInternal
+
+} // namespace blink
+
+#endif