Make ImageBitmap Transferable

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

 /*
  * Copyright (C) 2009, 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 30 matching lines @@
 
 class ArrayBufferContents;
 
 }
 
 namespace blink {
 
 class BlobDataHandle;
 class DOMArrayBufferBase;
 class ExceptionState;
+class ImageBitmap;
 class MessagePort;
 class WebBlobInfo;
 
 typedef HeapVector<Member<MessagePort>, 1> MessagePortArray;
 typedef Vector<RefPtr<DOMArrayBufferBase>, 1> ArrayBufferArray;
 typedef HashMap<String, RefPtr<BlobDataHandle>> BlobDataHandleMap;
 typedef Vector<WebBlobInfo> WebBlobInfoArray;
+typedef WillBeHeapVector<RefPtrWillBeMember<ImageBitmap>, 1> ImageBitmapArray;
 
 class CORE_EXPORT SerializedScriptValue : public ThreadSafeRefCounted<SerializedScriptValue> {
 public:
     // Increment this for each incompatible change to the wire format.
     // Version 2: Added StringUCharTag for UChar v8 strings.
     // Version 3: Switched to using uuids as blob data identifiers.
     // Version 4: Extended File serialization to be complete.
     // Version 5: Added CryptoKeyTag for Key objects.
     // Version 6: Added indexed serialization for File, Blob, and FileList.
     // Version 7: Extended File serialization with user visibility.
@@ skipping 14 matching lines @@
 
     // Deserializes the value (in the current context). Returns a null value in
     // case of failure.
     v8::Local<v8::Value> deserialize(MessagePortArray* = 0);
     v8::Local<v8::Value> deserialize(v8::Isolate*, MessagePortArray* = 0, const WebBlobInfoArray* = 0);
 
     // Helper function which pulls the values out of a JS sequence and into a MessagePortArray.
     // Also validates the elements per sections 4.1.13 and 4.1.15 of the WebIDL spec and section 8.3.3
     // of the HTML5 spec and generates exceptions as appropriate.
     // Returns true if the array was filled, or false if the passed value was not of an appropriate type.
-    static bool extractTransferables(v8::Isolate*, v8::Local<v8::Value>, int, MessagePortArray&, ArrayBufferArray&, ExceptionState&);
+    static bool extractTransferables(v8::Isolate*, v8::Local<v8::Value>, int, MessagePortArray&, ArrayBufferArray&, ImageBitmapArray&, ExceptionState&);
 
     // Informs the V8 about external memory allocated and owned by this object. Large values should contribute
     // to GC counters to eventually trigger a GC, otherwise flood of postMessage() can cause OOM.
     // Ok to invoke multiple times (only adds memory once).
     // The memory registration is revoked automatically in destructor.
     void registerMemoryAllocatedWithCurrentScriptContext();
 
     // Returns true if the value contains a transferable ArrayBuffer.
     bool containsTransferableArrayBuffer() const;
 
 private:
     // The followings are private, but used by SerializedScriptValueFactory.
     enum StringDataMode {
         StringValue,
         WireData
     };
     typedef Vector<WTF::ArrayBufferContents, 1> ArrayBufferContentsArray;
 
     SerializedScriptValue();
     explicit SerializedScriptValue(const String& wireData);
 
     BlobDataHandleMap& blobDataHandles() { return m_blobDataHandles; }
     String& data() { return m_data; }
     void setData(const String& data) { m_data = data; }
     void transferArrayBuffers(v8::Isolate*, ArrayBufferArray&, ExceptionState&);
+    void transferImageBitmaps(v8::Isolate*, ImageBitmapArray&, ExceptionState&);
     ArrayBufferContentsArray* arrayBufferContentsArray() { return m_arrayBufferContentsArray.get(); }
+    ImageBitmapArray* imageBitmapArray() { return m_imageBitmapsArray.get(); }
 
     static PassOwnPtr<ArrayBufferContentsArray> createArrayBuffers(v8::Isolate*, ArrayBufferArray&, ExceptionState&);
+    static PassOwnPtr<ImageBitmapArray> createImageBitmaps(v8::Isolate*, ImageBitmapArray&, ExceptionState&);
 
 private:
     String m_data;
     OwnPtr<ArrayBufferContentsArray> m_arrayBufferContentsArray;
+    OwnPtr<ImageBitmapArray> m_imageBitmapsArray;

[Justin Novosad, 2015/10/23 19:39:57]

Because SerializedScriptValue is ref counted (As opposed to garbage collected)
the guy should be OwnPtrWillBePersistent<ImageBitmapArray>.

     BlobDataHandleMap m_blobDataHandles;
     intptr_t m_externallyAllocatedMemory;
 
     friend class SerializedScriptValueFactory;
 };
 
 } // namespace blink
 
 #endif // SerializedScriptValue_h