Disable AccessibilityMessagesQueueWhileSwappedOut on Linux.

content/renderer/accessibility/renderer_accessibility_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 "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "content/common/frame_messages.h"
 #include "content/common/view_message_enums.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/render_view_test.h"
@@ skipping 128 matching lines @@
   root_obj = document.accessibilityObject();
   sink_->ClearMessages();
   const WebAXObject& first_child = root_obj.childAt(0);
   accessibility->HandleAXEvent(
       first_child,
       ui::AX_EVENT_LIVE_REGION_CHANGED);
   accessibility->SendPendingAccessibilityEvents();
   EXPECT_EQ(4, CountAccessibilityNodesSentToBrowser());
 }
 
-// http://crbug.com/253537
-#if defined(OS_ANDROID)
+// http://crbug.com/253537, http://crbug.com/498407
+#if defined(OS_ANDROID) || defined(OS_LINUX)
 #define MAYBE_AccessibilityMessagesQueueWhileSwappedOut \
         DISABLED_AccessibilityMessagesQueueWhileSwappedOut
 #else
 #define MAYBE_AccessibilityMessagesQueueWhileSwappedOut \
         AccessibilityMessagesQueueWhileSwappedOut
 #endif
 
 TEST_F(RendererAccessibilityTest,
        MAYBE_AccessibilityMessagesQueueWhileSwappedOut) {
   // This test breaks down in --site-per-process, as swapping out destroys
@@ skipping 251 matching lines @@
 
   const IPC::Message* message =
       sink_->GetUniqueMessageMatching(AccessibilityHostMsg_Events::ID);
   ASSERT_TRUE(message);
   base::Tuple<std::vector<AccessibilityHostMsg_EventParams>, int> param;
   AccessibilityHostMsg_Events::Read(message, &param);
   ASSERT_EQ(0U, base::get<0>(param).size());
 }
 
 }  // namespace content