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/image/SkImage_GpuBase.cpp b/src/image/SkImage_GpuBase.cpp
index 4c3761a..54cd000 100644
--- a/src/image/SkImage_GpuBase.cpp
+++ b/src/image/SkImage_GpuBase.cpp
@@ -14,6 +14,7 @@
 #include "src/core/SkTLList.h"
 #include "src/gpu/GrClip.h"
 #include "src/gpu/GrContextPriv.h"
+#include "src/gpu/GrImageInfo.h"
 #include "src/gpu/GrRecordingContextPriv.h"
 #include "src/gpu/GrRenderTargetContext.h"
 #include "src/gpu/GrTextureAdjuster.h"