Disable WebContentsViewAuraTest.OverscrollScreenshot test

Flaking on ChromeOS and Windows, so disabling altogether.

BUG=357311
NOTRY=true

Review URL: https://codereview.chromium.org/296703004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271828 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/web_contents/web_contents_view_aura_browsertest.cc

@@ -377,13 +377,9 @@ IN_PROC_BROWSER_TEST_F(WebContentsViewAuraTest,
 //  - interactively, when user does an overscroll gesture
 //  - interactively, when user navigates in history without the overscroll
 //    gesture.
-#if defined(OS_WIN)
-// http://crbug.com/357311
-#define MAYBE_OverscrollScreenshot DISABLED_OverscrollScreenshot
-#else
-#define MAYBE_OverscrollScreenshot OverscrollScreenshot
-#endif
-IN_PROC_BROWSER_TEST_F(WebContentsViewAuraTest, MAYBE_OverscrollScreenshot) {
+// Flaky on Windows and ChromeOS (http://crbug.com/357311). Might be related to
+// OverscrollNavigation test.
+IN_PROC_BROWSER_TEST_F(WebContentsViewAuraTest, DISABLED_OverscrollScreenshot) {
   // Disable the test for WinXP.  See http://crbug/294116.
 #if defined(OS_WIN)
   if (base::win::GetVersion() < base::win::VERSION_VISTA) {