Add GetExplicitPassphraseTime() JNI call.

chrome/browser/sync/profile_sync_service_android.cc

Index: chrome/browser/sync/profile_sync_service_android.cc
diff --git a/chrome/browser/sync/profile_sync_service_android.cc b/chrome/browser/sync/profile_sync_service_android.cc
index 567297cc9c73ec7f3cee65a6117d4c43ed2b2733..7960efe6e2c8f0f87729eb62e3f1f1e23e215469 100644
--- a/chrome/browser/sync/profile_sync_service_android.cc
+++ b/chrome/browser/sync/profile_sync_service_android.cc
@@ -292,6 +292,13 @@ jboolean ProfileSyncServiceAndroid::HasExplicitPassphraseTime(
   return !passphrase_time.is_null();
 }
 
+jlong ProfileSyncServiceAndroid::GetExplicitPassphraseTime(
+        JNIEnv* env, jobject) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  base::Time passphrase_time = sync_service_->GetExplicitPassphraseTime();
+  return passphrase_time.ToJavaTime();
+}
+
 ScopedJavaLocalRef<jstring>
     ProfileSyncServiceAndroid::GetSyncEnterGooglePassphraseBodyWithDateText(
         JNIEnv* env, jobject) {