Disable all the tests that are flaking more than 5% on Linux builders.

ui/views/widget/desktop_aura/desktop_window_tree_host_x11_unittest.cc

 // Copyright 2014 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 <vector>
 
 #include <X11/extensions/shape.h>
 #include <X11/Xlib.h>
 
 // Get rid of X11 macros which conflict with gtest.
@@ skipping 454 matching lines @@
 
     WMStateWaiter waiter(xid, "_NET_WM_STATE_FOCUSED", true);
     waiter.Wait();
   }
   EXPECT_TRUE(widget.GetNativeWindow()->IsVisible());
 }
 
 // Test that calling Widget::Deactivate() sets the widget as inactive wrt to
 // Chrome even if it not possible to deactivate the window wrt to the x server.
 // This behavior is required by several interactive_ui_tests.
-TEST_F(DesktopWindowTreeHostX11Test, Deactivate) {
+// http://crbug.com/396491
+TEST_F(DesktopWindowTreeHostX11Test, DISABLED_Deactivate) {
   scoped_ptr<Widget> widget(CreateWidget(NULL));
 
   ActivationWaiter waiter(
       widget->GetNativeWindow()->GetHost()->GetAcceleratedWidget());
   widget->Show();
   widget->Activate();
   waiter.Wait();
 
   widget->Deactivate();
   // Regardless of whether |widget|'s X11 window eventually gets deactivated,
   // |widget|'s "active" state should change.
   EXPECT_FALSE(widget->IsActive());
 
   // |widget|'s X11 window should still be active. Reactivating |widget| should
   // update the widget's "active" state.
   // Note: Activating a widget whose X11 window is not active does not
   // synchronously update the widget's "active" state.
   widget->Activate();
   EXPECT_TRUE(widget->IsActive());
 }
 
 }  // namespace views