Revert of add SkBitmap::installPixelRef()

include/core/SkBitmap.h

Index: include/core/SkBitmap.h
diff --git a/include/core/SkBitmap.h b/include/core/SkBitmap.h
index 1cb4fd7f354316a39c5e82eb349c8d1f50b28b32..b8117bd76f3ea0d7efe67987177cbd877d0a5279 100644
--- a/include/core/SkBitmap.h
+++ b/include/core/SkBitmap.h
@@ -267,16 +267,6 @@
         @param ctable   ColorTable (or null) that matches the specified pixels
     */
     void setPixels(void* p, SkColorTable* ctable = NULL);
-
-    /**
-     *  Install the specified pixelref into the bitmap, with an optional rect
-     *  for referencing a subset of the pixels in the pixelref. This sets the
-     *  config/width/height/alphatype of the bitmap to match the pixelref.
-     *
-     *  The subset rect, if not null, is intersected with the bounds of the
-     *  pixelref (taken from its SkImageInfo).
-     */
-    SkPixelRef* installPixelRef(SkPixelRef*, const SkIRect* subset = NULL);
 
     /** Copies the bitmap's pixels to the location pointed at by dst and returns
         true if possible, returns false otherwise.