Add accepts_flags to the browsers schema as an optional hint

browsers/samsunginternet_android.json

@@ -2,6 +2,7 @@
   "browsers": {
     "samsunginternet_android": {
       "name": "Samsung Internet",
+      "accepts_flags": false,
       "releases": {
         "1.0": {
           "release_date": "2013-04-27",

browsers/webview_android.json

@@ -2,6 +2,7 @@
   "browsers": {
     "webview_android": {
       "name": "WebView Android",
+      "accepts_flags": false,
       "releases": {
         "1": {
           "release_date": "2008-09-23",

schemas/browsers-schema.md

@@ -40,6 +40,10 @@ Underneath, there is a `releases` object which will hold the various releases of
 
 The `name` string is a required property which should use the browser brand name and avoid English words if possible, for example `"Firefox"`, `"Firefox Android"`, `"Safari"`, `"iOS Safari"`, etc.
 
+### `accepts_flags`
+
+An optional boolean indicating whether the browser supports flags. This is a hint to data contributors and tools. A `true` value does not mean that there exists any flag data for the browser and a `false` value does not guarantee a lack of flag data for the browser.
+
 ### `pref_url`
 
 An optional string containing the URL of the page where feature flags can be changed (e.g. `"about:config"` for Firefox or `"chrome://flags"` for Chrome).
@@ -62,6 +66,10 @@ The release objects consist of the following properties:
 
 - An optional `release_notes` property which points to release notes. It needs to be a valid URL.
 
+- An optional `accepts_flags` boolean property indicating whether the release supports flags.
+
+  This is a hint to data contributors and tools. A `true` value does not mean that there exists any flag data for the release and a `false` value does not guarantee a lack of flag data for the release.
+
 - An optional `engine` property which is the name of the browser's engine.
 
 - An optional `engine_version` property which is the version of the browser's engine. This may or may not differ from the browser version.

schemas/browsers.schema.json

@@ -30,6 +30,10 @@
           "type": "string",
           "description": "Browser name, avoid using unnecessary English (e.g. prefer 'Chrome Android' over 'Chrome for Android')."
         },
+        "accepts_flags": {
+          "type": "boolean",
+          "description": "Whether the browser supports flags."
+        },
         "pref_url": {
           "type": "string",
           "description": "URL of the page where feature flags can be changed (e.g. 'about:config' or 'chrome://flags')."
@@ -56,6 +60,10 @@
           "format": "uri",
           "description": "A link to the release notes or changelog for a given release."
         },
+        "accepts_flags": {
+          "type": "boolean",
+          "description": "Whether the release supports flags."
+        },
         "engine": {
           "type": "string",
           "enum": ["Blink", "EdgeHTML", "Gecko", "Presto", "Trident", "WebKit", "V8"],