Disable FramebufferFetch for Android

Dawn/Vulkan doesn't support FramebufferFetch and ShaderF16 used
together. Disable FramebufferFetch until that is resolved.

Bug: b/493892934
Change-Id: I07e3630e1d8b9582db712351738b0f5b25150c8c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/1226596
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Kyle Charbonneau <kylechar@google.com>
1 file changed