switch colorfilters to sk_sp

gm/testimagefilters.cpp

Index: gm/testimagefilters.cpp
diff --git a/gm/testimagefilters.cpp b/gm/testimagefilters.cpp
index 1ea9575c7c9fa492b3a42d8e3eacded3a62675a8..465d606e2ba5315d72de6d2b1f5bb9cb89c0ac8b 100644
--- a/gm/testimagefilters.cpp
+++ b/gm/testimagefilters.cpp
@@ -24,10 +24,8 @@
 static SkImageFilter* make0() { return SkDownSampleImageFilter::Create(SK_Scalar1 / 5); }
 static SkImageFilter* make1() { return SkOffsetImageFilter::Create(SkIntToScalar(16), SkIntToScalar(16)); }
 static SkImageFilter* make2() {
-    SkColorFilter* cf = SkColorFilter::CreateModeFilter(SK_ColorBLUE,
-                                                        SkXfermode::kSrcIn_Mode);
-    SkAutoUnref aur(cf);
-    return SkColorFilterImageFilter::Create(cf);
+    auto cf = SkColorFilter::MakeModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode);
+    return SkColorFilterImageFilter::Create(cf.get());
 }
 static SkImageFilter* make3() {
     return SkBlurImageFilter::Create(8, 0);
@@ -56,10 +54,8 @@ static SkImageFilter* make6() {
     SkImageFilter* compose = SkComposeImageFilter::Create(outer, inner);
     SkAutoUnref aur2(compose);
 
-    SkColorFilter* cf = SkColorFilter::CreateModeFilter(0x880000FF,
-                                                        SkXfermode::kSrcIn_Mode);
-    SkAutoUnref aur3(cf);
-    SkImageFilter* blue = SkColorFilterImageFilter::Create(cf);
+    auto cf = SkColorFilter::MakeModeFilter(0x880000FF, SkXfermode::kSrcIn_Mode);
+    SkImageFilter* blue = SkColorFilterImageFilter::Create(cf.get());
     SkAutoUnref aur4(blue);
 
     return SkMergeImageFilter::Create(compose, blue);
@@ -73,10 +69,8 @@ static SkImageFilter* make7() {
     SkImageFilter* compose = SkComposeImageFilter::Create(outer, inner);
     SkAutoUnref aur2(compose);
 
-    SkColorFilter* cf = SkColorFilter::CreateModeFilter(0x880000FF,
-                                                        SkXfermode::kSrcIn_Mode);
-    SkAutoUnref aur3(cf);
-    SkImageFilter* blue = SkColorFilterImageFilter::Create(cf);
+    auto cf = SkColorFilter::MakeModeFilter(0x880000FF, SkXfermode::kSrcIn_Mode);
+    SkImageFilter* blue = SkColorFilterImageFilter::Create(cf.get());
     SkAutoUnref aur4(blue);
 
     return SkMergeImageFilter::Create(compose, blue);