This is dead code that was used with the Skia backend, but no longer useful. With Skia, when we detected that a layer contained only solid color, we'd draw a 1x1 texture containing that color across the layer bounds. With the GL renderer, for solid color layers the display list will only contain commands to draw the solid color, so the optimization is "built in". This cleanup is done as part of PR 273550. The WebOverlay still uses the TextureCacheCompositingThread::textureForColor() so that one can stay for now.
Created attachment 199399 [details] Patch
Comment on attachment 199399 [details] Patch Thanks cgarcia =)
Comment on attachment 199399 [details] Patch Clearing flags on attachment: 199399 Committed r149019: <http://trac.webkit.org/changeset/149019>
All reviewed patches have been landed. Closing bug.