Makes WebAPK handle NOTIFICATION_PREFERENCES intents

chrome/android/webapk/shell_apk/BUILD.gn

Index: chrome/android/webapk/shell_apk/BUILD.gn
diff --git a/chrome/android/webapk/shell_apk/BUILD.gn b/chrome/android/webapk/shell_apk/BUILD.gn
index c15b38c25a814c91579b551dbfb4851ac84dedb7..2425d6850ed5a924f7e7bd354d4b7af740dceb83 100644
--- a/chrome/android/webapk/shell_apk/BUILD.gn
+++ b/chrome/android/webapk/shell_apk/BUILD.gn
@@ -12,6 +12,11 @@ declare_args() {
   # The browser that the WebAPK will be bound to.
   webapk_runtime_host = "com.google.android.apps.chrome"
 
+  # The class in |webapk_runtime_host|'s package which handles
+  # NOTIFICATION_PREFERENCES intents.
+  webapk_host_notification_preferences_handler =
+      "com.google.android.apps.chrome.Main"
+
   # The Url of the Web Manifest file.
   webapk_web_manifest_url = "https://www.template.com/manifest.json"
 
@@ -44,6 +49,7 @@ jinja_template("shell_apk_manifest") {
   variables = [
     "manifest_package=$shell_apk_manifest_package",
     "runtime_host=$webapk_runtime_host",
+    "host_notification_preferences_handler=$webapk_host_notification_preferences_handler",
     "start_url=$webapk_start_url",
     "name=$webapk_name",
     "short_name=$webapk_short_name",
@@ -77,6 +83,7 @@ android_apk("webapk") {
   java_files = [
     "src/org/chromium/webapk/shell_apk/HostBrowserClassLoader.java",
     "src/org/chromium/webapk/shell_apk/MainActivity.java",
+    "src/org/chromium/webapk/shell_apk/NotificationSettingsLauncherActivity.java",
     "src/org/chromium/webapk/shell_apk/WebApkSandboxedProcessService.java",
     "src/org/chromium/webapk/shell_apk/WebApkSandboxedProcessService0.java",
     "src/org/chromium/webapk/shell_apk/WebApkSandboxedProcessService1.java",