Disable flaky test.

SitePerProcessInternalsHitTestBrowserTest.NestedLocalNonFastScrollableDivCoordsAreLoca

TBR=wjmaclean@chromium.org

Bug: 961135
Change-Id: I55775c6d772a1ef19a71b0a78a25410e1b2c6ec9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1603771Reviewed-by: Charlene Yan <cyan@chromium.org>
Commit-Queue: Charlene Yan <cyan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#658341}

content/browser/site_per_process_hit_test_browsertest.cc

@@ -927,7 +927,7 @@ IN_PROC_BROWSER_TEST_P(SitePerProcessInternalsHitTestBrowserTest,
 }
 
 IN_PROC_BROWSER_TEST_P(SitePerProcessInternalsHitTestBrowserTest,
-                       NestedLocalNonFastScrollableDivCoordsAreLocal) {
+                       DISABLED_NestedLocalNonFastScrollableDivCoordsAreLocal) {
   GURL main_url(embedded_test_server()->GetURL(
       "a.com", "/cross_site_iframe_factory.html?a(b)"));
   EXPECT_TRUE(NavigateToURL(shell(), main_url));