Refactored SkColorSpace and added in a Lab PCS GM

tests/ColorSpaceTest.cpp

Index: tests/ColorSpaceTest.cpp
diff --git a/tests/ColorSpaceTest.cpp b/tests/ColorSpaceTest.cpp
index a6ed9e3cf9c8c77a984b92985a90beb4f0065b83..a591678afd5d740728831b86187219ab8302f9b2 100644
--- a/tests/ColorSpaceTest.cpp
+++ b/tests/ColorSpaceTest.cpp
@@ -9,6 +9,7 @@
 #include "SkCodec.h"
 #include "SkColorSpace.h"
 #include "SkColorSpace_Base.h"
+#include "SkColorSpace_XYZTRC.h"
 #include "Test.h"
 
 #include "png.h"
@@ -22,9 +23,11 @@ static void test_space(skiatest::Reporter* r, SkColorSpace* space,
                        const SkGammaNamed expectedGamma) {
 
     REPORTER_ASSERT(r, nullptr != space);
-    REPORTER_ASSERT(r, expectedGamma == as_CSB(space)->gammaNamed());
+    SkASSERT(as_CSB(space)->requestToXYZD50());
+    const SkColorSpace_XYZTRC* csXYZ = static_cast<const SkColorSpace_XYZTRC*>(space);
+    REPORTER_ASSERT(r, expectedGamma == csXYZ->gammaNamed());
 
-    const SkMatrix44& mat = as_CSB(space)->toXYZD50();
+    const SkMatrix44& mat = csXYZ->toXYZD50();
     const float src[] = {
         1, 0, 0, 1,
         0, 1, 0, 1,
@@ -166,8 +169,14 @@ DEF_TEST(ColorSpaceWriteICC, r) {
     sk_sp<SkData> newMonitorData = ColorSpaceTest::WriteToICC(monitorSpace.get());
     sk_sp<SkColorSpace> newMonitorSpace = SkColorSpace::NewICC(newMonitorData->data(),
                                                                newMonitorData->size());
-    REPORTER_ASSERT(r, as_CSB(monitorSpace)->toXYZD50() == as_CSB(newMonitorSpace)->toXYZD50());
-    REPORTER_ASSERT(r, as_CSB(monitorSpace)->gammaNamed() == as_CSB(newMonitorSpace)->gammaNamed());
+    SkASSERT(as_CSB(monitorSpace)->requestToXYZD50());
+    const SkColorSpace_XYZTRC* monitorSpaceXYZ =
+            static_cast<const SkColorSpace_XYZTRC*>(monitorSpace.get());
+    SkASSERT(as_CSB(newMonitorSpace)->requestToXYZD50());
+    const SkColorSpace_XYZTRC* newMonitorSpaceXYZ =
+            static_cast<const SkColorSpace_XYZTRC*>(newMonitorSpace.get());
+    REPORTER_ASSERT(r, monitorSpaceXYZ->toXYZD50() == newMonitorSpaceXYZ->toXYZD50());
+    REPORTER_ASSERT(r, monitorSpaceXYZ->gammaNamed() == newMonitorSpaceXYZ->gammaNamed());
 }
 
 DEF_TEST(ColorSpace_Named, r) {
@@ -184,7 +193,9 @@ DEF_TEST(ColorSpace_Named, r) {
         auto cs = SkColorSpace::NewNamed(rec.fNamed);
         REPORTER_ASSERT(r, cs);
         if (cs) {
-            REPORTER_ASSERT(r, rec.fExpectedGamma == as_CSB(cs)->gammaNamed());
+            SkASSERT(as_CSB(cs)->requestToXYZD50());
+            const SkColorSpace_XYZTRC* csXYZ = static_cast<const SkColorSpace_XYZTRC*>(cs.get());
+            REPORTER_ASSERT(r, rec.fExpectedGamma == csXYZ->gammaNamed());
         }
     }