Mark NetInternalsPrerenderView as flaky.

TBR=eroman

BUG=91799
TEST=NetInternalsTest.NetInternalsPrerenderView
Review URL: http://codereview.chromium.org/7491058

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@95610 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/webui/net_internals_ui_browsertest.cc

@@ -215,7 +215,8 @@ IN_PROC_BROWSER_TEST_F(NetInternalsTest, NetInternalsTestViewFailTwice) {
 
 // Prerender two pages and check PrerenderView behavior.  The first is expected
 // to fail, the second is expected to succeed.
-IN_PROC_BROWSER_TEST_F(NetInternalsTest, NetInternalsPrerenderView) {
+// Test flaky on XP due to http://crbug.com/91799.
+IN_PROC_BROWSER_TEST_F(NetInternalsTest, FLAKY_NetInternalsPrerenderView) {
   ASSERT_TRUE(test_server()->Start());
   RunTestAndWaitForTitle(
       "NetInternalsPrerenderView",