Control distillability with command-line flag

components/dom_distiller/core/dom_distiller_switches.cc

Index: components/dom_distiller/core/dom_distiller_switches.cc
diff --git a/components/dom_distiller/core/dom_distiller_switches.cc b/components/dom_distiller/core/dom_distiller_switches.cc
index ea30b68c039809fc1c1d33cb06ae8120394108c0..c1545f2d5d2721e8f7806e651b7299664ea75050 100644
--- a/components/dom_distiller/core/dom_distiller_switches.cc
+++ b/components/dom_distiller/core/dom_distiller_switches.cc
@@ -10,6 +10,7 @@ const char kEnableDomDistiller[] = "enable-dom-distiller";
 const char kEnableSyncArticles[] = "enable-sync-articles";
 const char kReaderModeHeuristics[] = "reader-mode-heuristics";
 const char kReaderModeFeedback[] = "reader-mode-feedback";
+const char kEnableDistillabilityService[] = "enable-distillability-service";
 
 namespace reader_mode_heuristics {
 const char kAdaBoost[] = "adaboost";