[Webkit-unassigned] [Bug 249178] New: Create SerializedImageBuffer to safely transfer ImageBuffers between threads

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=249178

            Bug ID: 249178
           Summary: Create SerializedImageBuffer to safely transfer
                    ImageBuffers between threads
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mattwoodrow at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

ImageBuffers can be RemoteImageBufferProxy instances that are only safe to use on the thread they were created on.

We want to be able to transfer the reference to a new thread, so this adds SerializedImageBuffer to represent the state where we're currently transferring between threads.

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