Reland of [2] of "switch colorfilters to sk_sp (patchset #11 id:200001 of https://codereview.chromium.o…

src/effects/SkColorFilterImageFilter.cpp

Index: src/effects/SkColorFilterImageFilter.cpp
diff --git a/src/effects/SkColorFilterImageFilter.cpp b/src/effects/SkColorFilterImageFilter.cpp
index 96ce5d9690588867945886330a4dc723b4450fd9..6eb66533d90a96846610a9c7674d784b19e34a3e 100644
--- a/src/effects/SkColorFilterImageFilter.cpp
+++ b/src/effects/SkColorFilterImageFilter.cpp
@@ -25,10 +25,10 @@
     if (input && input->isColorFilterNode(&inputCF)) {
         // This is an optimization, as it collapses the hierarchy by just combining the two
         // colorfilters into a single one, which the new imagefilter will wrap.
-        SkAutoUnref autoUnref(inputCF);
-        SkAutoTUnref<SkColorFilter> newCF(SkColorFilter::CreateComposeFilter(cf, inputCF));
+        sk_sp<SkColorFilter> newCF(SkColorFilter::MakeComposeFilter(sk_ref_sp(cf),
+                                                                    sk_sp<SkColorFilter>(inputCF)));
         if (newCF) {
-            return new SkColorFilterImageFilter(newCF, input->getInput(0), cropRect);
+            return new SkColorFilterImageFilter(newCF.get(), input->getInput(0), cropRect);
         }
     }
 
@@ -42,17 +42,13 @@
 
 SkFlattenable* SkColorFilterImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
-    SkAutoTUnref<SkColorFilter> cf(buffer.readColorFilter());
-    return Create(cf, common.getInput(0), &common.cropRect());
+    sk_sp<SkColorFilter> cf(buffer.readColorFilter());
+    return Create(cf.get(), common.getInput(0), &common.cropRect());
 }
 
 void SkColorFilterImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
-    buffer.writeFlattenable(fColorFilter);
-}
-
-SkColorFilterImageFilter::~SkColorFilterImageFilter() {
-    fColorFilter->unref();
+    buffer.writeFlattenable(fColorFilter.get());
 }
 
 bool SkColorFilterImageFilter::onFilterImageDeprecated(Proxy* proxy, const SkBitmap& source,
@@ -94,7 +90,7 @@
     SkASSERT(1 == this->countInputs());
     if (!this->cropRectIsSet()) {
         if (filter) {
-            *filter = SkRef(fColorFilter);
+            *filter = SkRef(fColorFilter.get());
         }
         return true;
     }