Disable flaky CursorTestIncognito on Android

IndexedDBBrowserTest.CursorTestIncognito is flaky on
linux_android_rel_ng.

TBR=jsbell@chromium.org
BUG=716728

Review-Url: https://codereview.chromium.org/2853753002
Cr-Commit-Position: refs/heads/master@{#468282}

content/browser/indexed_db/indexed_db_browsertest.cc

@@ -200,7 +200,12 @@ IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, CursorTest) {
   SimpleTest(GetTestUrl("indexeddb", "cursor_test.html"));
 }
 
-IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, CursorTestIncognito) {
+#if defined(OS_ANDROID)
+#define MAYBE_CursorTestIncognito DISABLED_CursorTestIncognito
+#else
+#define MAYBE_CursorTestIncognito CursorTestIncogntio
+#endif
+IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, MAYBE_CursorTestIncognito) {
   SimpleTest(GetTestUrl("indexeddb", "cursor_test.html"),
              true /* incognito */);
 }