Frameworks/base: Use Arrays.toString

Fix a couple of cases where Arrays.toString should be used.

Bug: 19797138
Change-Id: I905fc79e63face9b26975320a92086c732bf6316
diff --git a/core/java/android/content/ContentProvider.java b/core/java/android/content/ContentProvider.java
index ba9cf7c..1c3f45c 100644
--- a/core/java/android/content/ContentProvider.java
+++ b/core/java/android/content/ContentProvider.java
@@ -52,6 +52,7 @@
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.util.ArrayList;
+import java.util.Arrays;
 
 /**
  * Content providers are one of the primary building blocks of Android applications, providing
@@ -1854,7 +1855,7 @@
             if (mAuthority != null) {
                 message += mAuthority;
             } else {
-                message += mAuthorities;
+                message += Arrays.toString(mAuthorities);
             }
             throw new SecurityException(message);
         }