Do not enable RenderTextHarfBuzz by default

ui/gfx/render_text.cc

Index: ui/gfx/render_text.cc
diff --git a/ui/gfx/render_text.cc b/ui/gfx/render_text.cc
index 807f8cd12ebe8d5b2579c25df00b65947789bc13..e7144f8e3d75838afa6ae34cf406a1e908930e17 100644
--- a/ui/gfx/render_text.cc
+++ b/ui/gfx/render_text.cc
@@ -426,8 +426,8 @@ RenderText* RenderText::CreateInstance() {
   // Use the more complete HarfBuzz implementation for Views controls on Mac.
   return new RenderTextHarfBuzz;
 #else
-  if (!CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableHarfBuzzRenderText)) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableHarfBuzzRenderText)) {
     return new RenderTextHarfBuzz;
   }
   return CreateNativeInstance();