Make a test not depend on system settings.

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 <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 33 matching lines @@
 #include "content/shell/browser/shell.h"
 #include "content/test/content_browser_test_utils_internal.h"
 #include "content/test/test_frame_navigation_observer.h"
 #include "ipc/ipc_security_test_util.h"
 #include "net/dns/mock_host_resolver.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/WebKit/public/web/WebSandboxFlags.h"
 #include "ui/gfx/switches.h"
 
+#if defined(OS_MACOSX)
+#include "ui/base/test/scoped_preferred_scroller_style_legacy_mac.h"
+#endif
+
 namespace content {
 
 namespace {
 
 // Helper function to send a postMessage and wait for a reply message.  The
 // |post_message_script| is executed on the |sender_ftn| frame, and the sender
 // frame is expected to post |reply_status| from the DOMAutomationController
 // when it receives a reply.
 void PostMessageAndWaitForReply(FrameTreeNode* sender_ftn,
                                 const std::string& post_message_script,
@@ skipping 1938 matching lines @@
 // Does not work on android since android has scrollbars overlayed.
 #if defined(OS_ANDROID)
 #define MAYBE_FrameOwnerPropertiesPropagationScrolling \
         DISABLED_FrameOwnerPropertiesPropagationScrolling
 #else
 #define MAYBE_FrameOwnerPropertiesPropagationScrolling \
         FrameOwnerPropertiesPropagationScrolling
 #endif
 IN_PROC_BROWSER_TEST_F(SitePerProcessBrowserTest,
                        MAYBE_FrameOwnerPropertiesPropagationScrolling) {
+#if defined(OS_MACOSX)
+  ui::test::ScopedPreferredScrollerStyleLegacy scroller_style_override;
+#endif
   GURL main_url(embedded_test_server()->GetURL(
       "a.com", "/frame_owner_properties_scrolling.html"));
   NavigateToURL(shell(), main_url);
 
   // It is safe to obtain the root frame tree node here, as it doesn't change.
   FrameTreeNode* root = static_cast<WebContentsImpl*>(shell()->web_contents())
                             ->GetFrameTree()
                             ->root();
   ASSERT_EQ(1u, root->child_count());
 
@@ skipping 2956 matching lines @@
   // The popup's origin should match |b_url|, since it's not sandboxed.
   std::string popup_origin;
   EXPECT_TRUE(ExecuteScriptAndExtractString(
       foo_root->current_frame_host(),
       "domAutomationController.send(document.origin)",
       &popup_origin));
   EXPECT_EQ(b_url.GetOrigin().spec(), popup_origin + "/");
 }
 
 }  // namespace content