Revert of add SkBitmap::installPixelRef()

src/core/SkScaledImageCache.cpp

Index: src/core/SkScaledImageCache.cpp
diff --git a/src/core/SkScaledImageCache.cpp b/src/core/SkScaledImageCache.cpp
index 68663f03b0aac595777631dfb937f27ca5e2a719..fc3148bdd8807a31f0660c7f45b36e78bdcd1f41 100644
--- a/src/core/SkScaledImageCache.cpp
+++ b/src/core/SkScaledImageCache.cpp
@@ -293,10 +293,14 @@
         return false;
     }
 
-    SkImageInfo info = SkImageInfo::MakeN32(bitmap->width(), bitmap->height(),
-                                            bitmap->alphaType());
-
-    bitmap->installPixelRef(SkNEW_ARGS(SkOneShotDiscardablePixelRef,
+    SkImageInfo info = {
+        bitmap->width(),
+        bitmap->height(),
+        kPMColor_SkColorType,
+        bitmap->alphaType()
+    };
+
+    bitmap->setPixelRef(SkNEW_ARGS(SkOneShotDiscardablePixelRef,
                                    (info, dm, bitmap->rowBytes())))->unref();
     bitmap->lockPixels();
     return bitmap->readyToDraw();