Disable flaky AwSettingsTest.testDatabaseEnabled

TBR=torne@chromium.org

Bug: 767180
Change-Id: I3ad4f6d1b67d19eb09f5dd489699031d629ff740
Reviewed-on: https://chromium-review.googlesource.com/684375Reviewed-by: Marc Treib <treib@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504356}

android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java

@@ -1816,9 +1816,12 @@ public class AwSettingsTest {
         helper.ensureSettingHasInitialValue();
     }
 
+    /*
+     * @SmallTest
+     * @Feature({"AndroidWebView", "Preferences"})
+     */
     @Test
-    @SmallTest
-    @Feature({"AndroidWebView", "Preferences"})
+    @DisabledTest(message = "crbug.com/767180")
     public void testDatabaseEnabled() throws Throwable {
         TestAwContentsClient client = new TestAwContentsClient();
         final AwTestContainerView testContainerView =