Mark DownloadTest.BrowserCloseAfterDownload as failing on all platforms

chrome/browser/download/download_browsertest.cc

Index: chrome/browser/download/download_browsertest.cc
diff --git a/chrome/browser/download/download_browsertest.cc b/chrome/browser/download/download_browsertest.cc
index 750b8059194ae0399f82705695c77d051cec01ef..2febbcb4451e67be9b125b18218d9a5eeab7e504 100644
--- a/chrome/browser/download/download_browsertest.cc
+++ b/chrome/browser/download/download_browsertest.cc
@@ -1320,13 +1320,9 @@ IN_PROC_BROWSER_TEST_F(DownloadTest, ChromeURLAfterDownload) {
 // Test for crbug.com/12745. This tests that if a download is initiated from
 // a chrome:// page that has registered and onunload handler, the browser
 // will be able to close.
-// Fails on Windows and Linux.  http://crbug.com/82278
-#if defined(OS_WIN) || defined(OS_LINUX)
-#define MAYBE_BrowserCloseAfterDownload FAILS_BrowserCloseAfterDownload
-#else
-#define MAYBE_BrowserCloseAfterDownload BrowserCloseAfterDownload
-#endif
-IN_PROC_BROWSER_TEST_F(DownloadTest, MAYBE_BrowserCloseAfterDownload) {
+// After several correct executions, this test starts failing on the build
+// bots and then continues to fail consistently.  http://crbug.com/82278
+IN_PROC_BROWSER_TEST_F(DownloadTest, FAILS_BrowserCloseAfterDownload) {
   GURL downloads_url(chrome::kAboutFlagsURL);
   FilePath file(FILE_PATH_LITERAL("download-test1.lib"));
   GURL download_url(URLRequestMockHTTPJob::GetMockUrl(file));