ash: Remove OS_CHROMEOS ifdefs from accelerator files

ash/host/ash_window_tree_host_x11.cc

Index: ash/host/ash_window_tree_host_x11.cc
diff --git a/ash/host/ash_window_tree_host_x11.cc b/ash/host/ash_window_tree_host_x11.cc
index e4bf38400b4ebdf9b6faa2b17cdddc750f7abb3a..6010b03c8bedce963b1bca96eea05a206aecc868 100644
--- a/ash/host/ash_window_tree_host_x11.cc
+++ b/ash/host/ash_window_tree_host_x11.cc
@@ -147,9 +147,7 @@ void AshWindowTreeHostX11::UpdateRootWindowSizeInPixels(
 }
 
 void AshWindowTreeHostX11::OnCursorVisibilityChangedNative(bool show) {
-#if defined(OS_CHROMEOS)
   SetCrOSTapPaused(!show);
-#endif
 }
 
 void AshWindowTreeHostX11::OnWindowInitialized(aura::Window* window) {}
@@ -158,11 +156,9 @@ void AshWindowTreeHostX11::OnHostInitialized(aura::WindowTreeHost* host) {
   if (host != AsWindowTreeHost())
     return;
 
-#if defined(OS_CHROMEOS)
   // We have to enable Tap-to-click by default because the cursor is set to
   // visible in Shell::InitRootWindowController.
   SetCrOSTapPaused(false);
-#endif
 }
 
 void AshWindowTreeHostX11::OnConfigureNotify() {
@@ -186,7 +182,6 @@ bool AshWindowTreeHostX11::CanDispatchEvent(const ui::PlatformEvent& event) {
     case ui::ET_TOUCH_PRESSED:
     case ui::ET_TOUCH_CANCELLED:
     case ui::ET_TOUCH_RELEASED: {
-#if defined(OS_CHROMEOS)
       XIDeviceEvent* xiev = static_cast<XIDeviceEvent*>(xev->xcookie.data);
       int64_t touch_display_id =
           ui::DeviceDataManager::GetInstance()->GetTargetDisplayForTouchDevice(
@@ -205,13 +200,13 @@ bool AshWindowTreeHostX11::CanDispatchEvent(const ui::PlatformEvent& event) {
         display::Display display = screen->GetDisplayNearestWindow(window());
         return touch_display_id == display.id();
       }
-#endif  // defined(OS_CHROMEOS)
       return true;
     }
     default:
       return true;
   }
 }
+
 void AshWindowTreeHostX11::TranslateAndDispatchLocatedEvent(
     ui::LocatedEvent* event) {
   TranslateLocatedEvent(event);
@@ -228,7 +223,6 @@ ui::EventDispatchDetails AshWindowTreeHostX11::DispatchKeyEventPostIME(
   return details;
 }
 
-#if defined(OS_CHROMEOS)
 void AshWindowTreeHostX11::SetCrOSTapPaused(bool state) {
   if (!ui::IsXInput2Available())
     return;
@@ -256,6 +250,5 @@ void AshWindowTreeHostX11::SetCrOSTapPaused(bool state) {
     }
   }
 }
-#endif  // defined(OS_CHROMEOS)
 
 }  // namespace ash