Add gammaIsLinear() API to SkColorSpace

src/core/SkColorSpace.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkColorSpace.h"
 #include "SkColorSpace_Base.h"
 #include "SkColorSpacePriv.h"
@@ skipping 389 matching lines @@
                 return false;
             }
 
             // It is unlikely that we will reach this case.
             sk_sp<SkData> srcData = src->serialize();
             sk_sp<SkData> dstData = dst->serialize();
             return srcData->size() == dstData->size() &&
                    0 == memcmp(srcData->data(), dstData->data(), srcData->size());
     }
 }
-
-bool SkColorSpace::gammasAreMatching() const {
-    const SkGammas* gammas = as_CSB(this)->gammas();
-    SkASSERT(gammas);
-    return gammas->fRedType == gammas->fGreenType && gammas->fGreenType == gammas->fBlueType &&
-           gammas->fRedData == gammas->fGreenData && gammas->fGreenData == gammas->fBlueData;
-}
-
-bool SkColorSpace::gammasAreNamed() const {
-    const SkGammas* gammas = as_CSB(this)->gammas();
-    SkASSERT(gammas);
-    return gammas->fRedType == SkGammas::Type::kNamed_Type &&
-           gammas->fGreenType == SkGammas::Type::kNamed_Type &&
-           gammas->fBlueType == SkGammas::Type::kNamed_Type;
-}
-
-bool SkColorSpace::gammasAreValues() const {
-    const SkGammas* gammas = as_CSB(this)->gammas();
-    SkASSERT(gammas);
-    return gammas->fRedType == SkGammas::Type::kValue_Type &&
-           gammas->fGreenType == SkGammas::Type::kValue_Type &&
-           gammas->fBlueType == SkGammas::Type::kValue_Type;
-}
-
-bool SkColorSpace::gammasAreTables() const {
-    const SkGammas* gammas = as_CSB(this)->gammas();
-    SkASSERT(gammas);
-    return gammas->fRedType == SkGammas::Type::kTable_Type &&
-           gammas->fGreenType == SkGammas::Type::kTable_Type &&
-           gammas->fBlueType == SkGammas::Type::kTable_Type;
-}
-
-bool SkColorSpace::gammasAreParams() const {
-    const SkGammas* gammas = as_CSB(this)->gammas();
-    SkASSERT(gammas);
-    return gammas->fRedType == SkGammas::Type::kParam_Type &&
-           gammas->fGreenType == SkGammas::Type::kParam_Type &&
-           gammas->fBlueType == SkGammas::Type::kParam_Type;
-}