Added kSRGBLinear_Named color space, along with tests

src/effects/gradients/SkGradientShader.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Sk4fLinearGradient.h"
 #include "SkGradientShaderPriv.h"
 #include "SkHalf.h"
@@ skipping 123 matching lines @@
             origColors += desc.fCount;
             *origColors = desc.fColors[desc.fCount - 1];
         }
 
         // Convert our SkColor colors to SkColor4f as well
         for (int i = 0; i < fColorCount; ++i) {
             fOrigColors4f[i] = SkColor4f::FromColor(fOrigColors[i]);
         }
 
         // Color space refers to fColors4f, so it's always linear gamma
-        fColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named)->makeLinearGamma();
+        fColorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGBLinear_Named);
     } else {
         SkASSERT(desc.fColors4f && desc.fColorSpace && desc.fColorSpace->gammaIsLinear());
 
         // Now copy over the colors, adding the dummies as needed
         SkColor4f* origColors = fOrigColors4f;
         if (dummyFirst) {
             *origColors++ = desc.fColors4f[0];
         }
         memcpy(origColors, desc.fColors4f, desc.fCount * sizeof(SkColor4f));
         if (dummyLast) {
@@ skipping 521 matching lines @@
             // allocate and populate the bitmap's data directly.
 
             SkImageInfo info;
             switch (bitmapType) {
                 case GradientBitmapType::kSRGB:
                     info = SkImageInfo::Make(kCache32Count, 1, kRGBA_8888_SkColorType,
                                              kPremul_SkAlphaType,
                                              SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named));
                     break;
                 case GradientBitmapType::kHalfFloat:
-                    info = SkImageInfo::Make(kCache32Count, 1, kRGBA_F16_SkColorType,
-                                             kPremul_SkAlphaType,
-                                             SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named)
-                                                ->makeLinearGamma());
+                    info = SkImageInfo::Make(
+                        kCache32Count, 1, kRGBA_F16_SkColorType, kPremul_SkAlphaType,
+                        SkColorSpace::NewNamed(SkColorSpace::kSRGBLinear_Named));
                     break;
                 default:
                     SkFAIL("Unexpected bitmap type");
                     return;
             }
             bitmap->allocPixels(info);
             this->initLinearBitmap(bitmap);
         }
         gCache->add(storage.get(), size, *bitmap);
     }
@@ skipping 914 matching lines @@
             (*stops)[i] = stop;
             stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f;
         }
     }
     *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount));
 
     return outColors;
 }
 
 #endif