Allow add to homescreen and app banner strings to be changed via variations.

chrome/browser/android/banners/app_banner_manager_android.cc

Index: chrome/browser/android/banners/app_banner_manager_android.cc
diff --git a/chrome/browser/android/banners/app_banner_manager_android.cc b/chrome/browser/android/banners/app_banner_manager_android.cc
index dfd17f1003c18cd67564c62ec4be6281b6958a58..4a97b86a0b98dd535761b30109ec3a1d817725d4 100644
--- a/chrome/browser/android/banners/app_banner_manager_android.cc
+++ b/chrome/browser/android/banners/app_banner_manager_android.cc
@@ -17,6 +17,7 @@
 #include "chrome/browser/android/webapk/webapk_metrics.h"
 #include "chrome/browser/android/webapk/webapk_web_manifest_checker.h"
 #include "chrome/browser/banners/app_banner_metrics.h"
+#include "chrome/browser/banners/app_banner_settings_helper.h"
 #include "chrome/browser/manifest/manifest_icon_downloader.h"
 #include "chrome/browser/manifest/manifest_icon_selector.h"
 #include "content/public/browser/web_contents.h"
@@ -288,6 +289,13 @@ bool AppBannerManagerAndroid::Register(JNIEnv* env) {
 }
 
 // static
+jint GetHomescreenLanguageOption(JNIEnv* env,
+                                 const JavaParamRef<jclass>& clazz) {
+  return AppBannerSettingsHelper::GetHomescreenLanguageOption();
+}
+
+
+// static
 ScopedJavaLocalRef<jobject> GetJavaBannerManagerForWebContents(
     JNIEnv* env,
     const JavaParamRef<jclass>& clazz,