Revert of Refactor parsing and storage of SkGammas

src/core/SkColorSpacePriv.h

Index: src/core/SkColorSpacePriv.h
diff --git a/src/core/SkColorSpacePriv.h b/src/core/SkColorSpacePriv.h
index e7c8aaa10382345f44a30449f43fe1b55844952e..7c7b9d0c2146978f66ca385fa79276898e7bb486 100644
--- a/src/core/SkColorSpacePriv.h
+++ b/src/core/SkColorSpacePriv.h
@@ -10,3 +10,16 @@
 inline bool color_space_almost_equal(float a, float b) {
     return SkTAbs(a - b) < 0.01f;
 }
+
+inline void set_gamma_value(SkGammaCurve* gamma, float value) {
+    if (color_space_almost_equal(2.2f, value)) {
+        gamma->fNamed = SkColorSpace::k2Dot2Curve_GammaNamed;
+    } else if (color_space_almost_equal(1.0f, value)) {
+        gamma->fNamed = SkColorSpace::kLinear_GammaNamed;
+    } else if (color_space_almost_equal(0.0f, value)) {
+        SkColorSpacePrintf("Treating invalid zero gamma as linear.");
+        gamma->fNamed = SkColorSpace::kLinear_GammaNamed;
+    } else {
+        gamma->fValue = value;
+    }
+}