SkColorSpace tweaks

tests/ColorSpaceTest.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 "Resources.h"
 #include "SkCodec.h"
 #include "SkColorSpace.h"
 #include "SkColorSpace_Base.h"
 #include "Test.h"
 
 #include "png.h"
 
 static bool almost_equal(float a, float b) {
     return SkTAbs(a - b) < 0.001f;
 }
 
 static void test_space(skiatest::Reporter* r, SkColorSpace* space,
                        const float red[], const float green[], const float blue[],
                        const float expectedGammas[]) {
 
-    SkGammas* gammas = as_CSB(space)->gammas();
+    const sk_sp<SkGammas>& gammas = as_CSB(space)->gammas();
     REPORTER_ASSERT(r, almost_equal(expectedGammas[0], gammas->fRed.fValue));
     REPORTER_ASSERT(r, almost_equal(expectedGammas[1], gammas->fGreen.fValue));
     REPORTER_ASSERT(r, almost_equal(expectedGammas[2], gammas->fBlue.fValue));
 
 
     SkMatrix44 mat = space->xyz();
     const float src[] = {
         1, 0, 0, 1,
         0, 1, 0, 1,
         0, 0, 1, 1,
@@ skipping 78 matching lines @@
     float sRGBGammas[3] = { 2.2f, 2.2f, 2.2f };
     srgbToxyzD50.set3x3ColMajorf(g_sRGB_XYZ);
     sk_sp<SkColorSpace> rgbColorSpace = SkColorSpace::NewRGB(sRGBGammas, srgbToxyzD50);
     REPORTER_ASSERT(r, namedColorSpace == namedColorSpace);
 
     // Change a single value from the sRGB matrix
     srgbToxyzD50.set(2, 2, 0.5f);
     sk_sp<SkColorSpace> strangeColorSpace = SkColorSpace::NewRGB(sRGBGammas, srgbToxyzD50);
     REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace);
 }