drawTextBlob should not be compatible with opacity inheritance

display_list/display_list_builder.cc

@@ -1124,7 +1124,12 @@ void DisplayListBuilder::drawTextBlob(const sk_sp<SkTextBlob> blob,
                                       SkScalar y) {
   Push<DrawTextBlobOp>(0, 1, blob, x, y);
   AccumulateOpBounds(blob->bounds().makeOffset(x, y), kDrawTextBlobFlags);
-  CheckLayerOpacityCompatibility();
+  // There is no way to query if the glyphs of a text blob overlap and
+  // there are no current guarantees from either Skia or Impeller that
+  // they will protect overlapping glyphs from the effects of overdraw
+  // so we must make the conservative assessment that this DL layer is
+  // not compatible with group opacity inheritance.
+  UpdateLayerOpacityCompatibility(false);
 }
 void DisplayListBuilder::DrawTextBlob(const sk_sp<SkTextBlob>& blob,
                                       SkScalar x,

display_list/display_list_unittests.cc

@@ -645,7 +645,7 @@ TEST(DisplayList, SingleOpsMightSupportGroupOpacityWithOrWithoutBlendMode) {
     static auto display_list = builder.Build();
     RUN_TESTS2(builder.drawDisplayList(display_list);, false);
   }
-  RUN_TESTS(builder.drawTextBlob(TestBlob1, 0, 0););
+  RUN_TESTS2(builder.drawTextBlob(TestBlob1, 0, 0);, false);
   RUN_TESTS2(builder.drawShadow(kTestPath1, SK_ColorBLACK, 1.0, false, 1.0);
              , false);