[Android] Adding content settings provider for notification channels

chrome/browser/BUILD.gn

Index: chrome/browser/BUILD.gn
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 3dc58f0323b47b9a225cee733aa061ffb55741dc..0db76cf5fb300b2927b51f2eb46584628203c72f 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -762,6 +762,8 @@ split_static_library("browser") {
     "notifications/non_persistent_notification_handler.h",
     "notifications/notification.cc",
     "notifications/notification.h",
+    "notifications/notification_channels_provider_android.cc",
+    "notifications/notification_channels_provider_android.h",
     "notifications/notification_common.cc",
     "notifications/notification_common.h",
     "notifications/notification_delegate.h",
@@ -4256,6 +4258,7 @@ if (is_android) {
       "../android/java/src/org/chromium/chrome/browser/net/spdyproxy/DataReductionProxySettings.java",
       "../android/java/src/org/chromium/chrome/browser/notifications/ActionInfo.java",
       "../android/java/src/org/chromium/chrome/browser/notifications/NotificationPlatformBridge.java",
+      "../android/java/src/org/chromium/chrome/browser/notifications/NotificationSettingsBridge.java",
       "../android/java/src/org/chromium/chrome/browser/ntp/ContentSuggestionsNotificationHelper.java",
       "../android/java/src/org/chromium/chrome/browser/ntp/ForeignSessionHelper.java",
       "../android/java/src/org/chromium/chrome/browser/ntp/LogoBridge.java",