[webcodecs] Replace use of deprecated ArrayBuffer

This CL replaces the use of ArrayBuffer in EncodedVideoChunk by
DOMArrayBuffer. ArrayBuffer is deprecated.

R=yukishiino@chromium.org

Bug: chromium:1008840
Change-Id: I3b1bdefce6a7e60e6b30ddaf6f55dbe1b748da3d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2102584Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#750489}

third_party/blink/renderer/modules/webcodecs/encoded_video_chunk.cc

@@ -27,12 +27,12 @@ EncodedVideoChunk* EncodedVideoChunk::Create(String type,
   if (duration)
     metadata.duration = base::TimeDelta::FromMicroseconds(duration);
   return MakeGarbageCollected<EncodedVideoChunk>(
-      metadata, ArrayBuffer::Create(data.Bytes(), data.ByteLengthAsSizeT()));
+      metadata, DOMArrayBuffer::Create(data.Bytes(), data.ByteLengthAsSizeT()));
 }
 
 EncodedVideoChunk::EncodedVideoChunk(EncodedVideoMetadata metadata,
-                                     scoped_refptr<ArrayBuffer> buffer)
-    : metadata_(metadata), buffer_(std::move(buffer)) {}
+                                     DOMArrayBuffer* buffer)
+    : metadata_(metadata), buffer_(buffer) {}
 
 String EncodedVideoChunk::type() const {
   return metadata_.key_frame ? "key" : "delta";
@@ -58,7 +58,7 @@ uint64_t EncodedVideoChunk::duration(bool* is_null) const {
 }
 
 DOMArrayBuffer* EncodedVideoChunk::data() const {
-  return DOMArrayBuffer::Create(buffer_);
+  return buffer_;
 }
 
 }  // namespace blink

third_party/blink/renderer/modules/webcodecs/encoded_video_chunk.h

@@ -12,15 +12,13 @@
 
 namespace blink {
 
-class ArrayBuffer;
 class DOMArrayBuffer;
 
 class MODULES_EXPORT EncodedVideoChunk final : public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
-  EncodedVideoChunk(EncodedVideoMetadata metadata,
-                    scoped_refptr<ArrayBuffer> buffer);
+  EncodedVideoChunk(EncodedVideoMetadata metadata, DOMArrayBuffer* buffer);
 
   static EncodedVideoChunk* Create(String type,
                                    uint64_t timestamp,
@@ -41,9 +39,14 @@ class MODULES_EXPORT EncodedVideoChunk final : public ScriptWrappable {
   }
   DOMArrayBuffer* data() const;
 
+  void Trace(Visitor* visitor) override {
+    visitor->Trace(buffer_);
+    ScriptWrappable::Trace(visitor);
+  }
+
  private:
   EncodedVideoMetadata metadata_;
-  scoped_refptr<ArrayBuffer> buffer_;
+  Member<DOMArrayBuffer> buffer_;
 };
 
 }  // namespace blink