[Webkit-unassigned] [Bug 74652] New: [CSS Shaders] Move CustomFilterOperation to the platform layer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=74652

           Summary: [CSS Shaders] Move CustomFilterOperation to the
                    platform layer
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: achicu at adobe.com
            Blocks: 71392


Move CustomFilterOperation to the platform layer and use a PlatformShader instead of a CachedShader.

Quoted from previous discussions with Chris Marrin:

1) Make an abstract base class called Shader (or maybe PlatformShader or ShaderClient or something). This has a pure virtual method to get the shader string.

2) Subclass StyleShader from Shader and implement the get shader method.

3) Replace the methods that take/return StyleShader with those that take/return Shader.

4) Move CustomFilterOperation down into platform along with the others.

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