Bug 119690 – [CSS Shapes] Eliminate GraphicsContext3D::ImageExtractor dependency

• Status: RESOLVED
• Resolution: INVALID
• Component: CSS

[Hans Muller]

The reviewer for bug 116643 had asked for the GraphicsContext3D dependency in Shapes.cpp to be removed.

The original plan was to refactor GraphicsContext3D::ImageExtractor et al, to remove its dependency on the rest of the WebGL code. See: 

The new plan is to render the shape's StyleImage instead: https://bugs.webkit.org/show_bug.cgi?id=119634

Use ImageBuffer::create() to create an ImageBuffer of the right size.
Draw the Image* with the GraphicsContext returned by imageBuffer->context().
Use ImageBuffer::getUnmultipliedImageData() to extract the RGBA pixels data.

[Hans Muller]

This doesn't need to be a separate bug.