Add NewRGB() with float gamma to SkColorSpace public API

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 120 matching lines @@
            color_space_almost_equal(toXYZD50.getFloat(2, 2), standard[8]) &&
            color_space_almost_equal(toXYZD50.getFloat(0, 3), 0.0f) &&
            color_space_almost_equal(toXYZD50.getFloat(1, 3), 0.0f) &&
            color_space_almost_equal(toXYZD50.getFloat(2, 3), 0.0f) &&
            color_space_almost_equal(toXYZD50.getFloat(3, 0), 0.0f) &&
            color_space_almost_equal(toXYZD50.getFloat(3, 1), 0.0f) &&
            color_space_almost_equal(toXYZD50.getFloat(3, 2), 0.0f) &&
            color_space_almost_equal(toXYZD50.getFloat(3, 3), 1.0f);
 }
 
-sk_sp<SkColorSpace> SkColorSpace_Base::NewRGB(const float values[3], const SkMatrix44& toXYZD50) {
+sk_sp<SkColorSpace> SkColorSpace::NewRGB(const float values[3], const SkMatrix44& toXYZD50) {
     if (0.0f > values[0] || 0.0f > values[1] || 0.0f > values[2]) {
         return nullptr;
     }
 
     SkGammaNamed gammaNamed = kNonStandard_SkGammaNamed;
     if (color_space_almost_equal(2.2f, values[0]) &&
             color_space_almost_equal(2.2f, values[1]) &&
             color_space_almost_equal(2.2f, values[2])) {
         gammaNamed = k2Dot2Curve_SkGammaNamed;
     } else if (color_space_almost_equal(1.0f, values[0]) &&
@@ skipping 401 matching lines @@
             }
 
             float gammas[3];
             gammas[0] = *(((const float*) data) + 0);
             gammas[1] = *(((const float*) data) + 1);
             gammas[2] = *(((const float*) data) + 2);
             data = SkTAddOffset<const void>(data, 3 * sizeof(float));
 
             SkMatrix44 toXYZ(SkMatrix44::kUninitialized_Constructor);
             toXYZ.set3x4RowMajorf((const float*) data);
-            return SkColorSpace_Base::NewRGB(gammas, toXYZ);
+            return SkColorSpace::NewRGB(gammas, toXYZ);
         }
         case ColorSpaceHeader::kTransferFn_Flag: {
             if (length < 19 * sizeof(float)) {
                 return nullptr;
             }
 
             SkColorSpaceTransferFn transferFn;
             transferFn.fA = *(((const float*) data) + 0);
             transferFn.fB = *(((const float*) data) + 1);
             transferFn.fC = *(((const float*) data) + 2);
@@ skipping 45 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());
     }
 }