Rename GrPixelInfo to GrImageInfo.

Give it its own header file.

Make it store SkISize rather than separate int w/h.

Change-Id: I732f2774c561decac743a950959a70cbc162b67b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/245163
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
diff --git a/src/gpu/effects/GrConfigConversionEffect.fp b/src/gpu/effects/GrConfigConversionEffect.fp
index 890d188..faaeeea 100644
--- a/src/gpu/effects/GrConfigConversionEffect.fp
+++ b/src/gpu/effects/GrConfigConversionEffect.fp
@@ -9,6 +9,7 @@
     #include "include/gpu/GrContext.h"
     #include "src/gpu/GrClip.h"
     #include "src/gpu/GrContextPriv.h"
+    #include "src/gpu/GrImageInfo.h"
     #include "src/gpu/GrProxyProvider.h"
     #include "src/gpu/GrRenderTargetContext.h"
 }