Disable PageNodeImplBrowserTest.PageFreezeOriginTrialOptOutOptIn.

The test is flaky.

TBR=sebmarchand@chromium.org

Bug: 1014282
Change-Id: I5b0f151426a8463b750fe99dafe0f271d7fc02ac
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1860978Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705724}

chrome/browser/performance_manager/graph/page_node_impl_browsertest.cc

@@ -254,8 +254,9 @@ IN_PROC_BROWSER_TEST_F(PageNodeImplBrowserTest,
   RunOriginTrialTestOnPMSequence(mojom::InterventionPolicy::kOptOut);
 }
 
+// Flaky. https://crbug.com/1014282
 IN_PROC_BROWSER_TEST_F(PageNodeImplBrowserTest,
-                       PageFreezeOriginTrialOptOutOptIn) {
+                       DISABLED_PageFreezeOriginTrialOptOutOptIn) {
   ui_test_utils::NavigateToURL(
       browser(), GURL(base::JoinString({kOriginTrialTestHostname, k2iFramesPath,
                                         kOriginTrialOptOutOptIn},