Mark IntentUtils#safeGetBinderExtra() as VisibleForTesting to unbreak downstream tests

chrome/android/java/src/org/chromium/chrome/browser/util/IntentUtils.java

Index: chrome/android/java/src/org/chromium/chrome/browser/util/IntentUtils.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/util/IntentUtils.java b/chrome/android/java/src/org/chromium/chrome/browser/util/IntentUtils.java
index d3d1698fe725832a0eeb0d8e7fbcc4116137c556..633f683a9f0c96ee2da76c8e9cf3f4114a72ba35 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/util/IntentUtils.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/util/IntentUtils.java
@@ -243,6 +243,7 @@ public class IntentUtils {
      * Creates a temporary copy of the extra Bundle, which is required as
      * Intent#getBinderExtra() doesn't exist, but Bundle.getBinder() does.
      */
+    @VisibleForTesting
     public static IBinder safeGetBinderExtra(Intent intent, String name) {
         if (!intent.hasExtra(name)) return null;
         Bundle extras = intent.getExtras();