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

chrome/browser/ui/webui/options/chromeos/display_options_handler.cc

Index: chrome/browser/ui/webui/options/chromeos/display_options_handler.cc
diff --git a/chrome/browser/ui/webui/options/chromeos/display_options_handler.cc b/chrome/browser/ui/webui/options/chromeos/display_options_handler.cc
index be1f47466a9c22a13b1fc385f94514f98a155ca6..ea08f4a97b16b2890e08a1c74a45a8d953479e7d 100644
--- a/chrome/browser/ui/webui/options/chromeos/display_options_handler.cc
+++ b/chrome/browser/ui/webui/options/chromeos/display_options_handler.cc
@@ -117,7 +117,7 @@ void DisplayOptionsHandler::SendDisplayInfo() {
   base::FundamentalValue mirroring(
       output_configurator->output_state() == chromeos::STATE_DUAL_MIRROR);
 
-  int64 primary_id = gfx::Screen::GetPrimaryDisplay().id();
+  int64 primary_id = ash::Shell::GetScreen()->GetPrimaryDisplay().id();
   base::ListValue displays;
   for (size_t i = 0; i < display_manager->GetNumDisplays(); ++i) {
     const gfx::Display* display = display_manager->GetDisplayAt(i);