Revert of Add Gr*Proxy classes

include/core/SkTypes.h

Index: include/core/SkTypes.h
diff --git a/include/core/SkTypes.h b/include/core/SkTypes.h
index fe0dedb4475068158b22fb497c6a43fa9070038a..a94a59233f6b6596898aa90b1938e7126a092e0d 100644
--- a/include/core/SkTypes.h
+++ b/include/core/SkTypes.h
@@ -448,15 +448,6 @@
     kYes = true
 };
 
-/**
- * Indicates whether a backing store needs to be an exact match or can be larger
- * than is strictly necessary
- */
-enum class SkBackingFit {
-    kApprox,
-    kExact
-};
-
 ///////////////////////////////////////////////////////////////////////////////
 
 /** Use to combine multiple bits in a bitmask in a type safe way.