Disable AutoSizeSW test on mac because it's flaky.

BUG=299507

TBR=lazyboy@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/149783002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247741 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/apps/web_view_browsertest.cc

@@ -633,7 +633,7 @@ IN_PROC_BROWSER_TEST_F(WebViewTest, AutoSize) {
 // This test ensures <webview> doesn't crash in SW rendering when autosize is
 // turned on.
 // Flaky on Windows http://crbug.com/299507
-#if defined(OS_WIN)
+#if defined(OS_WIN) || defined(OS_MACOSX)
 #define MAYBE_AutoSizeSW DISABLED_AutoSizeSW
 #else
 #define MAYBE_AutoSizeSW AutoSizeSW