Reduce internal explicit SaveFlags usage.

src/animator/SkDrawSaveLayer.cpp

Index: src/animator/SkDrawSaveLayer.cpp
diff --git a/src/animator/SkDrawSaveLayer.cpp b/src/animator/SkDrawSaveLayer.cpp
index 4e97a044e5f584382008a4480411f77e3fb5f7aa..9623c905c9b3fb141aa99fbfc4b07018c6a2dddf 100644
--- a/src/animator/SkDrawSaveLayer.cpp
+++ b/src/animator/SkDrawSaveLayer.cpp
@@ -41,10 +41,10 @@ bool SkSaveLayer::draw(SkAnimateMaker& maker)
     {
         SkPaint realPaint;
         paint->setupPaint(&realPaint);
-        maker.fCanvas->saveLayer(&bounds->fRect, &realPaint, SkCanvas::kHasAlphaLayer_SaveFlag);
+        maker.fCanvas->saveLayer(&bounds->fRect, &realPaint);
     }
     else
-        maker.fCanvas->saveLayer(&bounds->fRect, save, SkCanvas::kHasAlphaLayer_SaveFlag);
+        maker.fCanvas->saveLayer(&bounds->fRect, save);
     SkPaint local = SkPaint(*maker.fPaint);
     maker.fPaint = &local;
     bool result = INHERITED::draw(maker);