remove alphatype from colortable

bench/BitmapBench.cpp

Index: bench/BitmapBench.cpp
diff --git a/bench/BitmapBench.cpp b/bench/BitmapBench.cpp
index e9ba1dcb918d1488575ee353f0933a1538936cac..efd6d9668429ee93cf8b378682d310e31ec6088f 100644
--- a/bench/BitmapBench.cpp
+++ b/bench/BitmapBench.cpp
@@ -44,7 +44,7 @@ static void convertToIndex666(const SkBitmap& src, SkBitmap* dst, SkAlphaType aT
             }
         }
     }
-    SkColorTable* ctable = new SkColorTable(storage, 216, aType);
+    SkColorTable* ctable = new SkColorTable(storage, 216);
     dst->allocPixels(SkImageInfo::Make(src.width(), src.height(), kIndex_8_SkColorType, aType),
                      NULL, ctable);
     ctable->unref();