[Android] Adding content settings provider for notification channels

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 c41074d938bd23da1cdcdb1c0b5b103830cc73d9..e0b4be78d666b81ece53724afa8042c35b569125 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -314,6 +314,13 @@ const base::Feature kRunAllFlashInAllowMode{"RunAllFlashInAllowMode",
 const base::Feature kSafeSearchUrlReporting{"SafeSearchUrlReporting",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 
+#if defined(OS_ANDROID)
+// Enables separate notification channels in Android O for notifications from
+// different origins, instead of sending them all to a single 'Sites' channel.
+const base::Feature kSiteNotificationChannels{
+    "SiteNotificationChannels", base::FEATURE_DISABLED_BY_DEFAULT};
+#endif  // defined (OS_ANDROID)
+
 // A new user experience for transitioning into fullscreen and mouse pointer
 // lock states.
 const base::Feature kSimplifiedFullscreenUI{"ViewsSimplifiedFullscreenUI",