Finish conversion to sk_sp<SkShader>

example/HelloWorld.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  */
 
 #include "HelloWorld.h"
@@ skipping 75 matching lines @@
 }
 
 void HelloWorldWindow::drawContents(SkCanvas* canvas) {
     // Clear background
     canvas->drawColor(SK_ColorWHITE);
 
     SkPaint paint;
     paint.setColor(SK_ColorRED);
 
     // Draw a rectangle with red paint
-    SkRect rect = {
-            10, 10,
-            128, 128
-    };
+    SkRect rect = SkRect::MakeXYWH(10, 10, 128, 128);
     canvas->drawRect(rect, paint);
 
     // Set up a linear gradient and draw a circle
     {
         SkPoint linearPoints[] = {
                 {0, 0},
                 {300, 300}
         };
         SkColor linearColors[] = {SK_ColorGREEN, SK_ColorBLACK};
 
-        SkShader* shader = SkGradientShader::CreateLinear(
-                linearPoints, linearColors, NULL, 2,
-                SkShader::kMirror_TileMode);
-        SkAutoUnref shader_deleter(shader);
-
-        paint.setShader(shader);
+        paint.setShader(SkGradientShader::MakeLinear(
+                linearPoints, linearColors, nullptr, 2,
+                SkShader::kMirror_TileMode));
         paint.setFlags(SkPaint::kAntiAlias_Flag);
 
         canvas->drawCircle(200, 200, 64, paint);
 
         // Detach shader
-        paint.setShader(NULL);
+        paint.setShader(nullptr);
     }
 
     // Draw a message with a nice black paint.
     paint.setFlags(
             SkPaint::kAntiAlias_Flag |
             SkPaint::kSubpixelText_Flag |  // ... avoid waggly text when rotating.
             SkPaint::kUnderlineText_Flag);
     paint.setColor(SK_ColorBLACK);
     paint.setTextSize(20);
 
@@ skipping 51 matching lines @@
         setUpBackend();
         this->setTitle();
         this->inval(NULL);
     }
     return true;
 }
 
 SkOSWindow* create_sk_window(void* hwnd, int , char** ) {
     return new HelloWorldWindow(hwnd);
 }