Make it more obvious when using an unaccelerated image buffer, and fix a few callers who do
Created attachment 261696 [details] Patch
Created attachment 261701 [details] Patch
Here are the bugs I filed for places where we're still creating unaccelerated image buffers and shouldn't be: RenderSVGResourceMasker::applyResource https://bugs.webkit.org/show_bug.cgi?id=149470 RenderSVGResourceClipper::applyClippingToContext https://bugs.webkit.org/show_bug.cgi?id=149469 Shape::createRasterShape https://bugs.webkit.org/show_bug.cgi?id=149420 MediaControlTextTrackContainerElement::createTextTrackRepresentationImage https://bugs.webkit.org/show_bug.cgi?id=149422 WebGLRenderingContextBase::LRUImageBufferCache::imageBuffer https://bugs.webkit.org/show_bug.cgi?id=149423 CSSFilterImageValue::image https://bugs.webkit.org/show_bug.cgi?id=149424 ImageBuffer(CG)::putByteArray https://bugs.webkit.org/show_bug.cgi?id=149431 Some of these need more investigation into why making an accelerated buffer fails, some just need plumbing through of a way to know which kind of buffer to make.
Created attachment 261754 [details] Patch for EWS
http://trac.webkit.org/changeset/190124