[Webkit-unassigned] [Bug 207198] New: Implement the remote RenderingBackend

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=207198

            Bug ID: 207198
           Summary: Implement the remote RenderingBackend
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: dino at apple.com

RemoteRenderingBackend and RemoteRenderingBackendProxy will be responsible of creating the remote ImageBuffer objects. RemoteRenderingBackend will create the remote ImageBuffer in WebProcess while RemoteRenderingBackendProxy will create the associated remote ImageBuffer proxy in the GPUProcess.

RemoteRenderingBackend will be created by WebChromeClient and owned by Chrome. ImageBuffer::create will have access to it through the HostWindow argument. All types of ImageBuffer will be created by RemoteRenderingBackend::createImageBuffer() method. In-process ImageBuffer types will be created by RenderingBackend:: createImageBuffer().

RemoteRenderingBackendProxy will be created and owned by GPUConnectionToWebProcess. RemoteRenderingBackend and RemoteRenderingBackendProxy will communicate with each other using IPC and a new ObjectIdentifier called RenderingBackendIdentifier.

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