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/GrAtlas.cpp b/src/gpu/GrAtlas.cpp
index 17464ba..9553cf2 100644
--- a/src/gpu/GrAtlas.cpp
+++ b/src/gpu/GrAtlas.cpp
@@ -179,10 +179,10 @@
     if (NULL == fTexture[format]) {
         GrTextureDesc desc = {
             kDynamicUpdate_GrTextureFlagBit,
-            kNone_GrAALevel,
             GR_ATLAS_TEXTURE_WIDTH,
             GR_ATLAS_TEXTURE_HEIGHT,
-            maskformat2pixelconfig(format)
+            maskformat2pixelconfig(format),
+            {0} // samples
         };
         fTexture[format] = fGpu->createTexture(desc, NULL, 0);
         if (NULL == fTexture[format]) {