Remove SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS flag.

include/effects/SkPixelXorXfermode.h

Index: include/effects/SkPixelXorXfermode.h
diff --git a/include/effects/SkPixelXorXfermode.h b/include/effects/SkPixelXorXfermode.h
index 837257ec2c71a20273d7aca158df5f073c71826a..64648457f8f61d66e13af1094fe3c4edca794306 100644
--- a/include/effects/SkPixelXorXfermode.h
+++ b/include/effects/SkPixelXorXfermode.h
@@ -25,17 +25,13 @@ public:
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPixelXorXfermode)
 
 protected:
-    SkPixelXorXfermode(SkReadBuffer& rb);
+    explicit SkPixelXorXfermode(SkColor opColor) : fOpColor(opColor) {}
+    explicit SkPixelXorXfermode(SkReadBuffer& rb);
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
     // override from SkXfermode
     virtual SkPMColor xferColor(SkPMColor src, SkPMColor dst) const;
 
-#ifdef SK_SUPPORT_LEGACY_PUBLICEFFECTCONSTRUCTORS
-public:
-#endif
-    SkPixelXorXfermode(SkColor opColor) : fOpColor(opColor) {}
-
 private:
     SkColor fOpColor;