Add missing ServiceNotFoundException class

This class was added in ServiceManager.java in commit 49ca529a85.
Layoutlib rewrites the entire ServiceManager class, so it also
needs to define ServiceNotFoundException.

Test: TestDelegates.testMethodDelegates
Change-Id: Ia68399e8baa973ae961eabe929ca3d1019f20ba7

tools/layoutlib/bridge/src/android/os/ServiceManager.java

@@ -71,4 +71,18 @@ public final class ServiceManager {
     public static void initServiceCache(Map<String, IBinder> cache) {
         // pass
     }
+
+    /**
+     * Exception thrown when no service published for given name. This might be
+     * thrown early during boot before certain services have published
+     * themselves.
+     *
+     * @hide
+     */
+    public static class ServiceNotFoundException extends Exception {
+        // identical to the original implementation
+        public ServiceNotFoundException(String name) {
+            super("No service published for: " + name);
+        }
+    }
 }