SkPDF: PDFShader does not hold images/bitmaps

src/pdf/SkPDFShader.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkPDFShader.h"
 
@@ skipping 434 matching lines @@
 
 private:
     State(const State& other);
     State operator=(const State& rhs);
     void AllocateGradientInfoStorage();
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 
 SkPDFFunctionShader::SkPDFFunctionShader(SkPDFShader::State* state)
-    : SkPDFDict("Pattern"), fShaderState(state) {}
+    : SkPDFDict("Pattern"), fShaderState(state) {
+    state->fImage.reset();
+}
 
 SkPDFFunctionShader::~SkPDFFunctionShader() {}
 
 bool SkPDFFunctionShader::equals(const SkPDFShader::State& state) const {
     return state == *fShaderState;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 SkPDFAlphaFunctionShader::SkPDFAlphaFunctionShader(SkPDFShader::State* state)
-    : fShaderState(state) {}
+    : fShaderState(state) {
+    state->fImage.reset();
+}
 
 bool SkPDFAlphaFunctionShader::equals(const SkPDFShader::State& state) const {
     return state == *fShaderState;
 }
 
 SkPDFAlphaFunctionShader::~SkPDFAlphaFunctionShader() {}
 
 ////////////////////////////////////////////////////////////////////////////////
 
 SkPDFImageShader::SkPDFImageShader(SkPDFShader::State* state)
-    : fShaderState(state) {}
+    : fShaderState(state) {
+    state->fImage.reset();
+}
 
 bool SkPDFImageShader::equals(const SkPDFShader::State& state) const {
     return state == *fShaderState;
 }
 
 SkPDFImageShader::~SkPDFImageShader() {}
 
 ////////////////////////////////////////////////////////////////////////////////
 
 static SkPDFObject* get_pdf_shader_by_state(
@@ skipping 738 matching lines @@
     return false;
 }
 
 void SkPDFShader::State::AllocateGradientInfoStorage() {
     fColorData.set(sk_malloc_throw(
                fInfo.fColorCount * (sizeof(SkColor) + sizeof(SkScalar))));
     fInfo.fColors = reinterpret_cast<SkColor*>(fColorData.get());
     fInfo.fColorOffsets =
             reinterpret_cast<SkScalar*>(fInfo.fColors + fInfo.fColorCount);
 }