Unify DAA and AAA usage decision

Bug: skia:
Change-Id: I2481d872e072fdd638640ef2306aa89c1a1d6d94
Reviewed-on: https://skia-review.googlesource.com/26801
Commit-Queue: Yuqian Li <liyuqian@google.com>
Reviewed-by: Cary Clark <caryclark@google.com>
diff --git a/src/core/SkAAClip.cpp b/src/core/SkAAClip.cpp
index 100ac9c..092eb69 100644
--- a/src/core/SkAAClip.cpp
+++ b/src/core/SkAAClip.cpp
@@ -1421,13 +1421,15 @@
     BuilderBlitter blitter(&builder);
 
     if (doAA) {
-        if (!path.isConvex() && gSkUseDeltaAA.load()) {
-            SkScan::DAAFillPath(path, snugClip, &blitter, true);
-        } else if (gSkUseAnalyticAA.load()) {
+#ifdef SK_SUPPORT_LEGACY_DELTA_AA
+        if (gSkUseAnalyticAA.load()) {
             SkScan::AAAFillPath(path, snugClip, &blitter, true);
         } else {
             SkScan::AntiFillPath(path, snugClip, &blitter, true);
         }
+#else
+        SkScan::AntiFillPath(path, snugClip, &blitter, true);
+#endif
     } else {
         SkScan::FillPath(path, snugClip, &blitter);
     }