Change SkDecodingImageGenerator API

tests/CachedDecodingPixelRefTest.cpp

Index: tests/CachedDecodingPixelRefTest.cpp
diff --git a/tests/CachedDecodingPixelRefTest.cpp b/tests/CachedDecodingPixelRefTest.cpp
index f97e89361fab1b19d734fcdda64c9b959ba16295..ada0175e329304e1aeaf2613228c0c69c876bbd6 100644
--- a/tests/CachedDecodingPixelRefTest.cpp
+++ b/tests/CachedDecodingPixelRefTest.cpp
@@ -146,11 +146,12 @@ static void test_three_encodings(skiatest::Reporter* reporter,
 ////////////////////////////////////////////////////////////////////////////////
 static bool install_skCachingPixelRef(SkData* encoded, SkBitmap* dst) {
     return SkCachingPixelRef::Install(
-        SkNEW_ARGS(SkDecodingImageGenerator, (encoded)), dst);
+        SkNewDecodingImageGenerator(encoded, SkDecoderOptions()), dst);
 }
 static bool install_skDiscardablePixelRef(SkData* encoded, SkBitmap* dst) {
     // Use system-default discardable memory.
-    return SkDecodingImageGenerator::Install(encoded, dst, NULL);
+    return SkInstallDiscardablePixelRef(
+        SkNewDecodingImageGenerator(encoded, SkDecoderOptions()), dst, NULL);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -213,10 +214,12 @@ public:
         }
         return true;
     }
+
 private:
     const TestType fType;
     skiatest::Reporter* const fReporter;
 };
+
 void CheckTestImageGeneratorBitmap(skiatest::Reporter* reporter,
                                    const SkBitmap& bm) {
     REPORTER_ASSERT(reporter, TestImageGenerator::Width() == bm.width());
@@ -268,6 +271,7 @@ void CheckPixelRef(TestImageGenerator::TestType type,
     }
 }
 }  // namespace
+
 /**
  *  This tests the basic functionality of SkDiscardablePixelRef with a
  *  basic SkImageGenerator implementation and several