Don't force lcd on non-opaque portion of layer.

gm/lcdtext.cpp

Index: gm/lcdtext.cpp
diff --git a/gm/lcdtext.cpp b/gm/lcdtext.cpp
index e40fb0df18234d06baf2f63731b197bdb6e0f436..a2bfa01d3827ccac3f66a267042c523a1984de45 100644
--- a/gm/lcdtext.cpp
+++ b/gm/lcdtext.cpp
@@ -145,7 +145,13 @@ DEF_SIMPLE_GM(savelayer_lcdtext, canvas, 620, 260) {
     for (auto preserve : gPreserveLCDText) {
         preserve ? canvas->saveLayerPreserveLCDTextRequests(nullptr, nullptr)
                  : canvas->saveLayer(nullptr, nullptr);
-        canvas->drawText("Hamburgefons", 12, 30, 60, paint);
+        if (preserve) {
+            SkPaint noLCD = paint;
+            noLCD.setLCDRenderText(false);
+            canvas->drawText("LCD not supported", 17, 30, 60, noLCD);
+        } else {
+            canvas->drawText("Hamburgefons", 12, 30, 60, paint);
+        }
 
         SkPaint p;
         p.setColor(0xFFCCCCCC);