Temporary fix to return only the active displays.

ash/display/screen_ash.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 "ash/display/screen_ash.h"
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/wm/root_window_finder.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/window_tree_host_manager.h"
@@ skipping 142 matching lines @@
 display::Display ScreenAsh::GetDisplayNearestPoint(
     const gfx::Point& point) const {
   const display::Display& display =
       GetDisplayManager()->FindDisplayContainingPoint(point);
   if (display.is_valid())
     return display;
   // Fallback to the display that has the shortest Manhattan distance from
   // the |point|. This is correct in the only areas that matter, namely in the
   // corners between the physical screens.
   return *display::FindDisplayNearestPoint(
-      GetDisplayManager()->active_display_list(), point);
+      GetDisplayManager()->active_only_display_list(), point);
 }
 
 display::Display ScreenAsh::GetDisplayMatching(
     const gfx::Rect& match_rect) const {
   if (match_rect.IsEmpty())
     return GetDisplayNearestPoint(match_rect.origin());
   const display::Display* matching =
       display::FindDisplayWithBiggestIntersection(
-          GetDisplayManager()->active_display_list(), match_rect);
+          GetDisplayManager()->active_only_display_list(), match_rect);
   // Fallback to the primary display if there is no matching display.
   return matching ? *matching : GetPrimaryDisplay();
 }
 
 display::Display ScreenAsh::GetPrimaryDisplay() const {
   return GetDisplayManager()->GetDisplayForId(
       WindowTreeHostManager::GetPrimaryDisplayId());
 }
 
 void ScreenAsh::AddObserver(display::DisplayObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void ScreenAsh::RemoveObserver(display::DisplayObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 display::Screen* ScreenAsh::CloneForShutdown() {
   return new ScreenForShutdown(this);
 }
 
 }  // namespace ash