Disable FAVICON_TRACKING in addition to SESSION.

BUG=378035

Review URL: https://codereview.chromium.org/537083002

Cr-Commit-Position: refs/heads/master@{#293348}

sync/android/java/src/org/chromium/sync/internal_api/pub/base/ModelType.java

@@ -100,7 +100,7 @@ public enum ModelType {
     }
 
     private boolean isNonInvalidationType() {
-      if (this == SESSION && LibraryLoader.isInitialized()) {
+      if ((this == SESSION || this == FAVICON_TRACKING) && LibraryLoader.isInitialized()) {
         return FieldTrialList
             .findFullName("AndroidSessionNotifications")
             .equals("Disabled");