Create SkColorSpaceXform to handle color conversions

src/core/SkColorSpace.cpp

Index: src/core/SkColorSpace.cpp
diff --git a/src/core/SkColorSpace.cpp b/src/core/SkColorSpace.cpp
index 55ab4c177a57f77a57e09989f6ea584436262d54..c1b5e4435538ada8a2e01dc4515cdc61625aa1cb 100644
--- a/src/core/SkColorSpace.cpp
+++ b/src/core/SkColorSpace.cpp
@@ -322,7 +322,7 @@ bool SkColorSpace::LoadGammas(SkGammaCurve* gammas, uint32_t numGammas, const ui
                     // The table entry is the gamma (with a bias of 256).
                     uint16_t value = read_big_endian_short((const uint8_t*) table);
                     gammas[i].fValue = value / 256.0f;
-                    SkColorSpacePrintf("gamma %d %g\n", value, *gamma);
+                    SkColorSpacePrintf("gamma %d %g\n", value, gammas[i].fValue);
                     break;
                 }
 
@@ -371,7 +371,7 @@ bool SkColorSpace::LoadGammas(SkGammaCurve* gammas, uint32_t numGammas, const ui
         }
 
         // Adjust src and len if there is another gamma curve to load.
-        if (0 != numGammas) {
+        if (i != numGammas - 1) {
             // Each curve is padded to 4-byte alignment.
             tagBytes = SkAlign4(tagBytes);
             if (len < tagBytes) {