Change SkDecodingImageGenerator API

tests/PictureTest.cpp

Index: tests/PictureTest.cpp
diff --git a/tests/PictureTest.cpp b/tests/PictureTest.cpp
index 3c53dd38381718db159b24c8fff0f639bee14c16..5d702bba198ea7b6163e3ce08523ecb02ddf036a 100644
--- a/tests/PictureTest.cpp
+++ b/tests/PictureTest.cpp
@@ -11,6 +11,7 @@
 #include "SkData.h"
 #include "SkDecodingImageGenerator.h"
 #include "SkError.h"
+#include "SkImageGenerator.h"
 #include "SkPaint.h"
 #include "SkPicture.h"
 #include "SkPictureUtils.h"
@@ -379,7 +380,9 @@ static void test_bitmap_with_encoded_data(skiatest::Reporter* reporter) {
     SkAutoDataUnref data(wStream.copyToData());
 
     SkBitmap bm;
-    bool installSuccess = SkDecodingImageGenerator::Install(data, &bm);
+    bool installSuccess = SkInstallDiscardablePixelRef(
+         SkNewDecodingImageGenerator(data, SkDecoderOptions()), &bm, NULL);
+
     REPORTER_ASSERT(reporter, installSuccess);
 
     // Write both bitmaps to pictures, and ensure that the resulting data streams are the same.