Move the interface for querying drawing buffer texture target and binding point to GraphicsContextGL so that it can be implemented by RemoteGraphicsContextGLProxy.
<rdar://problem/109495048>
Pull request: https://github.com/WebKit/WebKit/pull/14004
Pull request: https://github.com/WebKit/WebKit/pull/14284
Committed 264456@main (c6ea643a2652): <https://commits.webkit.org/264456@main> Reviewed commits have been landed. Closing PR #14284 and removing active labels.