Disable SitePerProcessBrowserTest.ProxyCreationSkipsSubtree on mac

content/browser/site_per_process_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/site_per_process_browsertest.h"
 
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "content/browser/frame_host/cross_process_frame_connector.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ skipping 636 matching lines @@
     // DidFailProvisionalLoad when navigating to client_redirect_http_url.
     EXPECT_EQ(observer.navigation_url(), client_redirect_http_url);
     EXPECT_FALSE(observer.navigation_succeeded());
   }
 }
 
 // Ensure that when navigating a frame cross-process RenderFrameProxyHosts are
 // created in the FrameTree skipping the subtree of the navigating frame.
 // TODO(nasko): Test is disabled on Android, because it times out. It should
 // be fixed together with CrossSiteIframe on that platform.
-#if defined(OS_ANDROID)
+//
+// Disabled on Mac due to flakiness on ASAN. http://crbug.com/425248
+#if defined(OS_ANDROID) || defined(OS_MACOSX)
 #define MAYBE_ProxyCreationSkipsSubtree DISABLED_ProxyCreationSkipsSubtree
 #else
 #define MAYBE_ProxyCreationSkipsSubtree ProxyCreationSkipsSubtree
 #endif
 IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
                        MAYBE_ProxyCreationSkipsSubtree) {
   GURL main_url(embedded_test_server()->GetURL("/site_per_process_main.html"));
   NavigateToURL(shell(), main_url);
 
   // It is safe to obtain the root frame tree node here, as it doesn't change.
@@ skipping 95 matching lines @@
     }
 
     navigation_observer.Wait();
     EXPECT_EQ(cross_site_url, observer.navigation_url());
     EXPECT_TRUE(observer.navigation_succeeded());
     EXPECT_EQ(0U, child->child_count());
   }
 }
 
 }  // namespace content