Differentiate between sRGBGamma and 2Dot2Gamma

src/core/SkMipMap.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMipMap.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 288 matching lines @@
     }
     int64_t size = sk_64_mul(levelCount + 1, sizeof(Level)) + pixelSize;
     if (!sk_64_isS32(size)) {
         return 0;
     }
     return sk_64_asS32(size);
 }
 
 static bool treat_like_srgb(const SkImageInfo& info) {
     if (info.colorSpace()) {
-        return SkColorSpace::k2Dot2Curve_GammaNamed == info.colorSpace()->gammaNamed();
+        return info.colorSpace()->gammaCloseToSRGB();
     } else {
         return kSRGB_SkColorProfileType == info.profileType();
     }
 }
 
 SkMipMap* SkMipMap::Build(const SkPixmap& src, SkSourceGammaTreatment treatment,
                           SkDiscardableFactoryProc fact) {
     typedef void FilterProc(void*, const void* srcPtr, size_t srcRB, int count);
 
     FilterProc* proc_1_2 = nullptr;
@@ skipping 313 matching lines @@
         return false;
     }
     if (index > fCount - 1) {
         return false;
     }
     if (levelPtr) {
         *levelPtr = fLevels[index];
     }
     return true;
 }