Make it possible to query GrXPFactory for dst texture without GrPipelineAnalysis.

Change-Id: I8c140eb4e3e5f2d21ecbf8f8f3c8533dc7f50e7c
Reviewed-on: https://skia-review.googlesource.com/7316
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
7 files changed