Remove SK_SUPPORT_LEGACY_COLOR32_MATH

cc/output/renderer_pixeltest.cc

Index: cc/output/renderer_pixeltest.cc
diff --git a/cc/output/renderer_pixeltest.cc b/cc/output/renderer_pixeltest.cc
index bfad4ba0c1e9d45e49035ebd938d205376499c8f..269ec585a15a14db189e53ff5cff8090e1dc6060 100644
--- a/cc/output/renderer_pixeltest.cc
+++ b/cc/output/renderer_pixeltest.cc
@@ -1337,10 +1337,11 @@ TYPED_TEST(RendererPixelTest, FastPassSaturateFilter) {
   pass_list.push_back(child_pass.Pass());
   pass_list.push_back(root_pass.Pass());
 
+  // This test blends slightly differently with the software renderer vs. the gl
+  // renderer so use a fuzzy comparator.
   EXPECT_TRUE(this->RunPixelTest(
-      &pass_list,
-      base::FilePath(FILE_PATH_LITERAL("blue_yellow_alpha.png")),
-      ExactPixelComparator(true)));
+      &pass_list, base::FilePath(FILE_PATH_LITERAL("blue_yellow_alpha.png")),
+      FuzzyForSoftwareOnlyPixelComparator<TypeParam>(false)));
 }
 
 TYPED_TEST(RendererPixelTest, FastPassFilterChain) {
@@ -1408,10 +1409,12 @@ TYPED_TEST(RendererPixelTest, FastPassFilterChain) {
   pass_list.push_back(child_pass.Pass());
   pass_list.push_back(root_pass.Pass());
 
+  // This test blends slightly differently with the software renderer vs. the gl
+  // renderer so use a fuzzy comparator.
   EXPECT_TRUE(this->RunPixelTest(
       &pass_list,
       base::FilePath(FILE_PATH_LITERAL("blue_yellow_filter_chain.png")),
-      ExactPixelComparator(true)));
+      FuzzyForSoftwareOnlyPixelComparator<TypeParam>(false)));
 }
 
 TYPED_TEST(RendererPixelTest, FastPassColorFilterAlphaTranslation) {