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

src/core/SkColorFilterShader.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkColorFilterShader.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkShader.h"
 #include "SkString.h"
 
 #if SK_SUPPORT_GPU
 #include "GrFragmentProcessor.h"
 #endif
 
-SkColorFilterShader::SkColorFilterShader(SkShader* shader, SkColorFilter* filter)
-    : fShader(SkRef(shader))
-    , fFilter(SkRef(filter))
+SkColorFilterShader::SkColorFilterShader(sk_sp<SkShader> shader, sk_sp<SkColorFilter> filter)
+    : fShader(std::move(shader))
+    , fFilter(std::move(filter))
 {
-    SkASSERT(shader);
-    SkASSERT(filter);
+    SkASSERT(fShader);
+    SkASSERT(fFilter);
 }
 
 SkFlattenable* SkColorFilterShader::CreateProc(SkReadBuffer& buffer) {
     auto shader = buffer.readShader();
-    SkAutoTUnref<SkColorFilter> filter(buffer.readColorFilter());
-    if (!shader || !filter.get()) {
+    auto filter = buffer.readColorFilter();
+    if (!shader || !filter) {
         return nullptr;
     }
-    return new SkColorFilterShader(shader.get(), filter);
+    return new SkColorFilterShader(shader, filter);
 }
 
 void SkColorFilterShader::flatten(SkWriteBuffer& buffer) const {
-    buffer.writeFlattenable(fShader);
-    buffer.writeFlattenable(fFilter);
+    buffer.writeFlattenable(fShader.get());
+    buffer.writeFlattenable(fFilter.get());
 }
 
 uint32_t SkColorFilterShader::FilterShaderContext::getFlags() const {
     const SkColorFilterShader& filterShader = static_cast<const SkColorFilterShader&>(fShader);
 
     uint32_t shaderF = fShaderContext->getFlags();
     uint32_t filterF = filterShader.fFilter->getFlags();
 
     // If the filter does not support a given feature, but sure to clear the corresponding flag
     // in the shader flags.
@@ skipping 82 matching lines @@
     // TODO: add "fFilter->toString(str);" once SkColorFilter::toString is added
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
-sk_sp<SkShader> SkShader::makeWithColorFilter(SkColorFilter* filter) const {
+sk_sp<SkShader> SkShader::makeWithColorFilter(sk_sp<SkColorFilter> filter) const {
     SkShader* base = const_cast<SkShader*>(this);
     if (!filter) {
         return sk_ref_sp(base);
     }
-    return sk_make_sp<SkColorFilterShader>(base, filter);
+    return sk_make_sp<SkColorFilterShader>(sk_ref_sp(base), filter);
 }