Remove GrAALevel enum, use explicit sample count

Review URL: http://codereview.appspot.com/5600045/



git-svn-id: http://skia.googlecode.com/svn/trunk@3106 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index cab9d46..519475c 100644
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -73,10 +73,10 @@
 
     GrTextureDesc desc = {
         kNone_GrTextureFlags,
-        kNone_GrAALevel,
         bitmap->width(),
         bitmap->height(),
-        SkGr::Bitmap2PixelConfig(*bitmap)
+        SkGr::Bitmap2PixelConfig(*bitmap),
+        {0} // samples
     };
 
     if (SkBitmap::kIndex8_Config == bitmap->config()) {