change Run to store bool_aa instead of flags_only_aa

Bug: skia:2664
Change-Id: Idf89a511ba1427bf7a1000ba400aeafa215a7258
Reviewed-on: https://skia-review.googlesource.com/c/173993
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
diff --git a/src/gpu/text/GrTextBlob.cpp b/src/gpu/text/GrTextBlob.cpp
index 184ee7a..48aed7a 100644
--- a/src/gpu/text/GrTextBlob.cpp
+++ b/src/gpu/text/GrTextBlob.cpp
@@ -237,7 +237,7 @@
         // first flush any path glyphs
         if (run.fPathGlyphs.count()) {
             SkPaint runPaint{paint};
-            runPaint.setFlags((runPaint.getFlags() & ~Run::kPaintFlagsMask) | run.fPaintFlags);
+            runPaint.setAntiAlias(run.fAntiAlias);
 
             for (int i = 0; i < run.fPathGlyphs.count(); i++) {
                 GrTextBlob::Run::PathGlyph& pathGlyph = run.fPathGlyphs[i];