GrConvertPixels takes pixmaps

Add GrCPixmap, a GrPixmap but with const void* instead of void*. Share
impl via template base class GrPixmapBase.

Change-Id: I7dfdf24a73c1bc8557ff7b90f93a9399da2f3f75
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/350022
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/tests/SkRuntimeEffectTest.cpp b/tests/SkRuntimeEffectTest.cpp
index 85fbdd3..b295e93 100644
--- a/tests/SkRuntimeEffectTest.cpp
+++ b/tests/SkRuntimeEffectTest.cpp
@@ -13,6 +13,7 @@
 #include "include/core/SkSurface.h"
 #include "include/effects/SkRuntimeEffect.h"
 #include "include/gpu/GrDirectContext.h"
+#include "src/core/SkColorSpacePriv.h"
 #include "src/core/SkTLazy.h"
 #include "src/gpu/GrColor.h"
 #include "tests/Test.h"