Allow three digit phone numbers

The comment for the PHONE pattern says:

"<digit><digit|sdd>+<digit>"

But the actual pattern requires that the string contains
more than that. A phone number should be allowed to be
three digits.

Change-Id: I86d2f3d634cd0c1654dad9814906f151055dc23a

core/java/android/util/Patterns.java

@@ -169,10 +169,10 @@ public class Patterns {
      * </ul>
      */
     public static final Pattern PHONE
-        = Pattern.compile(                                  // sdd = space, dot, or dash
-                "(\\+[0-9]+[\\- \\.]*)?"                    // +<digits><sdd>*
-                + "(\\([0-9]+\\)[\\- \\.]*)?"               // (<digits>)<sdd>*
-                + "([0-9][0-9\\- \\.][0-9\\- \\.]+[0-9])"); // <digit><digit|sdd>+<digit> 
+        = Pattern.compile(                      // sdd = space, dot, or dash
+                "(\\+[0-9]+[\\- \\.]*)?"        // +<digits><sdd>*
+                + "(\\([0-9]+\\)[\\- \\.]*)?"   // (<digits>)<sdd>*
+                + "([0-9][0-9\\- \\.]+[0-9])"); // <digit><digit|sdd>+<digit>
 
     /**
      *  Convenience method to take all of the non-null matching groups in a

core/tests/coretests/src/android/util/PatternsTest.java

@@ -156,6 +156,8 @@ public class PatternsTest extends TestCase {
                 "Me: 16505551212 this\n",
                 "Me: 6505551212 this\n",
                 "Me: 5551212 this\n",
+                "Me: 2211 this\n",
+                "Me: 112 this\n",
 
                 "Me: 1-650-555-1212 this\n",
                 "Me: (650) 555-1212 this\n",