Remove gamma field from SkDeviceProperties

src/gpu/GrAtlasTextContext.h

Index: src/gpu/GrAtlasTextContext.h
diff --git a/src/gpu/GrAtlasTextContext.h b/src/gpu/GrAtlasTextContext.h
index 68ec8700399619f58d400d879e6c14818451954d..0805077d9dab313922e9a3fff97911a4d929ea12 100644
--- a/src/gpu/GrAtlasTextContext.h
+++ b/src/gpu/GrAtlasTextContext.h
@@ -366,19 +366,16 @@ private:
     // Because the GrAtlasTextContext can go out of scope before the final flush, this needs to be
     // refcnted and malloced
     struct DistanceAdjustTable : public SkNVRefCnt<DistanceAdjustTable> {
-        DistanceAdjustTable(float gamma) { this->buildDistanceAdjustTable(gamma); }
+        DistanceAdjustTable() { this->buildDistanceAdjustTable(); }
         ~DistanceAdjustTable() { SkDELETE_ARRAY(fTable); }
 
-        void buildDistanceAdjustTable(float gamma);
-
-        SkScalar& operator[] (int i) {
-            return fTable[i];
-        }
-
         const SkScalar& operator[] (int i) const {
             return fTable[i];
         }
 
+    private:
+        void buildDistanceAdjustTable();
+
         SkScalar* fTable;
     };