Add flags entry to enable Chrome OS component updates fature.

chrome/common/chrome_features.cc

Index: chrome/common/chrome_features.cc
diff --git a/chrome/common/chrome_features.cc b/chrome/common/chrome_features.cc
index 55ecabd77038e3cf378f0a5de8d0f9a8a608d38f..38cacd86f590c7ce491788df96a1c978046ccc34 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -219,6 +219,10 @@ const base::Feature kQuickUnlockPin{"QuickUnlockPin",
 // Enables or disables emoji, handwriting and voice input on opt-in IME menu.
 const base::Feature kEHVInputOnImeMenu{"EmojiHandwritingVoiceInput",
                                        base::FEATURE_DISABLED_BY_DEFAULT};
+
+// Enables or disables flash component updates on Chrome OS.
+const base::Feature kCrosCompUpdates{"CrosCompUpdates",
+                                     base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace features