Stop calling deprecated getFlags

See https://skia-review.googlesource.com/c/skia/+/382702

Change-Id: I3c2208c85846b6f523246f8ac0548205584c2359
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2749175
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: vmpstr <vmpstr@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
Cr-Commit-Position: refs/heads/master@{#861630}

cc/paint/paint_flags.cc

@@ -11,7 +11,7 @@
 namespace {
 
 static bool affects_alpha(const SkColorFilter* cf) {
-  return cf && !(cf->getFlags() & SkColorFilter::kAlphaUnchanged_Flag);
+  return cf && !cf->isAlphaUnchanged();
 }
 
 }  // namespace

skia/ext/benchmarking_canvas.cc

@@ -137,10 +137,9 @@ std::unique_ptr<base::Value> AsValue(SkCanvas::PointMode mode) {
 std::unique_ptr<base::Value> AsValue(const SkColorFilter& filter) {
   std::unique_ptr<base::DictionaryValue> val(new base::DictionaryValue());
 
-  if (unsigned flags = filter.getFlags()) {
+  if (filter.isAlphaUnchanged()) {
     FlagsBuilder builder('|');
-    builder.addFlag(flags & SkColorFilter::kAlphaUnchanged_Flag,
-                    "kAlphaUnchanged_Flag");
+    builder.addFlag(true, "kAlphaUnchanged_Flag");
 
     val->SetString("flags", builder.str());
   }