Mark NewTabUITest.ChromeInternalLoadsNTP flaky on all platforms.

chrome/browser/dom_ui/new_tab_ui_uitest.cc

Index: chrome/browser/dom_ui/new_tab_ui_uitest.cc
diff --git a/chrome/browser/dom_ui/new_tab_ui_uitest.cc b/chrome/browser/dom_ui/new_tab_ui_uitest.cc
index 245d188a9f07c68d02423379f4b64a2bc4dade3e..f2e96df2ea7a87751bcbf4928b40b54fed98f70b 100644
--- a/chrome/browser/dom_ui/new_tab_ui_uitest.cc
+++ b/chrome/browser/dom_ui/new_tab_ui_uitest.cc
@@ -52,11 +52,8 @@ TEST_F(NewTabUITest, NTPHasThumbnails) {
       action_max_timeout_ms()));
 }
 
-// Fails about 5% of the time on XP. http://crbug.com/45001
-#if defined(OS_WIN)
-#define ChromeInternalLoadsNTP FLAKY_ChromeInternalLoadsNTP
-#endif
-TEST_F(NewTabUITest, ChromeInternalLoadsNTP) {
+// Fails about ~5% of the time on all platforms. http://crbug.com/45001
+TEST_F(NewTabUITest, FLAKY_ChromeInternalLoadsNTP) {
   scoped_refptr<BrowserProxy> window(automation()->GetBrowserWindow(0));
   ASSERT_TRUE(window.get());