bug  3248277 android.webkit.AccessibilityInjectorTest tests are flaky on trygon

Change-Id: I06332bc6eafb692b9ec829a093d23eccde897a2a
diff --git a/core/tests/coretests/src/android/webkit/AccessibilityInjectorTest.java b/core/tests/coretests/src/android/webkit/AccessibilityInjectorTest.java
index 9c9d9fe..955f5e8 100644
--- a/core/tests/coretests/src/android/webkit/AccessibilityInjectorTest.java
+++ b/core/tests/coretests/src/android/webkit/AccessibilityInjectorTest.java
@@ -45,7 +45,7 @@
     private static final long TIMEOUT_WAIT_FOR_SELECTION_STRING = 1000;
 
     /** The timeout to wait for accessibility and the mock service to be enabled. */
-    private static final long TIMEOUT_ENABLE_ACCESSIBILITY_AND_MOCK_SERVICE = 500;
+    private static final long TIMEOUT_ENABLE_ACCESSIBILITY_AND_MOCK_SERVICE = 1000;
 
     /** The count of tests to detect when to shut down the service. */
     private static final int TEST_CASE_COUNT = 8;