Temporarily re-enable flaky test to get data.

Re-enables SitePerProcessBrowserTest.TouchEventAckQueueOrdering
in order to collect data on failures directly on the bots, since I can't
get it to flake locally.

Bug: 945025
Change-Id: I5f6352456164013f48e7034045aa44977b9c5435
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2499083Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Commit-Queue: James MacLean <wjmaclean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#820790}

content/browser/site_per_process_browsertest.cc

@@ -11119,8 +11119,9 @@ class TouchEventObserver : public RenderWidgetHost::InputEventObserver {
 //
 // This test is disabled due to flakiness on all platforms, but especially on
 // Android.  See https://crbug.com/945025.
-IN_PROC_BROWSER_TEST_P(SitePerProcessBrowserTest,
-                       DISABLED_TouchEventAckQueueOrdering) {
+// Note: temporarily re-enabled to collect data on the try-bots ... it will be
+// disabled again once we have some data.
+IN_PROC_BROWSER_TEST_P(SitePerProcessBrowserTest, TouchEventAckQueueOrdering) {
   GURL main_url(embedded_test_server()->GetURL(
       "a.com", "/cross_site_iframe_factory.html?a(b)"));
   EXPECT_TRUE(NavigateToURL(shell(), main_url));