Disable SitePerProcessBrowserTest.ProxyCreationSkipsSubtree on Windows due to flaky timeouts.

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 "base/strings/utf_string_conversions.h"
 #include "content/browser/frame_host/cross_process_frame_connector.h"
@@ skipping 761 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.
 //
 // Disabled on Mac due to flakiness on ASAN. http://crbug.com/425248
-#if defined(OS_MACOSX)
+// Disabled on Windows due to flakiness on Win 7 bot. http://crbug.com/444563
+#if defined(OS_MACOSX) || defined(OS_WIN)
 #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 307 matching lines @@
   params.frame_tree_node_id = child->frame_tree_node_id();
   child->navigator()->GetController()->LoadURLWithParams(params);
   nav_observer.Wait();
 
   // Verify that the navigation succeeded and the expected URL was loaded.
   EXPECT_TRUE(observer.navigation_succeeded());
   EXPECT_EQ(url, observer.navigation_url());
 }
 
 }  // namespace content