Add context to gfx::Screen calls in support of simultaneous desktop+ash

ui/views/widget/tooltip_manager_aura.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/logging.h"
 #include "ui/aura/client/tooltip_client.h"
 #include "ui/aura/root_window.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/rect.h"
@@ skipping 10 matching lines @@
   return 0;
 }
 
 // static
 gfx::Font TooltipManager::GetDefaultFont() {
   return ui::ResourceBundle::GetSharedInstance().GetFont(
       ui::ResourceBundle::BaseFont);
 }
 
 // static
-int TooltipManager::GetMaxWidth(int x, int y) {
+int TooltipManager::GetMaxWidth(int x, int y, gfx::NativeView context) {
   gfx::Rect monitor_bounds =
-      gfx::Screen::GetDisplayNearestPoint(gfx::Point(x, y)).bounds();
+      gfx::Screen::GetScreenFor(context)->GetDisplayNearestPoint(
+          gfx::Point(x, y)).bounds();
   return (monitor_bounds.width() + 1) / 2;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // TooltipManagerAura public:
 
 TooltipManagerAura::TooltipManagerAura(NativeWidgetAura* native_widget_aura)
     : native_widget_aura_(native_widget_aura) {
   aura::client::SetTooltipText(native_widget_aura_->GetNativeView(),
                                &tooltip_text_);
@@ skipping 51 matching lines @@
 void TooltipManagerAura::HideKeyboardTooltip()  {
   NOTREACHED();
 }
 
 View* TooltipManagerAura::GetViewUnderPoint(const gfx::Point& point) {
   View* root_view = native_widget_aura_->GetWidget()->GetRootView();
   return root_view->GetEventHandlerForPoint(point);
 }
 
 }  // namespace views.