sRGB support for distance field text.

src/gpu/text/GrDistanceFieldAdjustTable.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDistanceFieldAdjustTable_DEFINED
 #define GrDistanceFieldAdjustTable_DEFINED
 
 #include "SkRefCnt.h"
 #include "SkScalar.h"
 
 // Distance field text needs this table to compute a value for use in the fragment shader.
 // Because the GrAtlasTextContext can go out of scope before the final flush, this needs to be
 // refcnted and malloced
 struct GrDistanceFieldAdjustTable : public SkNVRefCnt<GrDistanceFieldAdjustTable> {
-    GrDistanceFieldAdjustTable() { this->buildDistanceAdjustTable(); }
-    ~GrDistanceFieldAdjustTable() { delete[] fTable; }
+    GrDistanceFieldAdjustTable() { this->buildDistanceAdjustTables(); }
+    ~GrDistanceFieldAdjustTable() {
+        delete[] fTable;
+        delete[] fSRGBTable;
+    }
 
-    const SkScalar& operator[] (int i) const {
-        return fTable[i];
+    const SkScalar& getAdjustment(int i, bool useSRGBTable) const {
+        return useSRGBTable ? fSRGBTable[i] : fTable[i];
     }
 
 private:
-    void buildDistanceAdjustTable();
+    void buildDistanceAdjustTables();
 
     SkScalar* fTable;
+    SkScalar* fSRGBTable;
 };
 
 #endif