Remove ui/gfx/screen_type_delegate.h

ash/display/display_manager.cc

Index: ash/display/display_manager.cc
diff --git a/ash/display/display_manager.cc b/ash/display/display_manager.cc
index 5d47aba7a1534431d437fe40ee3fdbf921fc3f84..e4ecf0217637b7d819deabaf4cb66c01c65038b2 100644
--- a/ash/display/display_manager.cc
+++ b/ash/display/display_manager.cc
@@ -146,14 +146,11 @@ DisplayManager::DisplayManager()
   unified_desktop_enabled_ = base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kAshEnableUnifiedDesktop);
 #endif
-  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_.get());
-  gfx::Screen* current_native =
-      gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE);
+  gfx::Screen* current = gfx::Screen::GetScreen();
   // If there is no native, or the native was for shutdown,
   // use ash's screen.
-  if (!current_native ||
-      current_native == screen_for_shutdown) {
-    gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_.get());
+  if (!current || current == screen_for_shutdown) {
+    gfx::Screen::SetScreenInstance(screen_.get());
   }
 }
 
@@ -1078,16 +1075,9 @@ scoped_ptr<MouseWarpController> DisplayManager::CreateMouseWarpController(
 }
 
 void DisplayManager::CreateScreenForShutdown() const {
-  bool native_is_ash =
-      gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE) == screen_.get();
   delete screen_for_shutdown;
   screen_for_shutdown = screen_->CloneForShutdown();
-  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE,
-                                 screen_for_shutdown);
-  if (native_is_ash) {
-    gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE,
-                                   screen_for_shutdown);
-  }
+  gfx::Screen::SetScreenInstance(screen_for_shutdown);
 }
 
 void DisplayManager::UpdateInternalDisplayModeListForTest() {