Remove legacy StartsWithASCII function.

ui/events/ozone/device/udev/device_manager_udev.cc

Index: ui/events/ozone/device/udev/device_manager_udev.cc
diff --git a/ui/events/ozone/device/udev/device_manager_udev.cc b/ui/events/ozone/device/udev/device_manager_udev.cc
index ca7daa26ad6c43f802d66f495b0007275bec558c..f05695b7fdf3d4ddd08df6fe15d09bea84fa1a5c 100644
--- a/ui/events/ozone/device/udev/device_manager_udev.cc
+++ b/ui/events/ozone/device/udev/device_manager_udev.cc
@@ -162,10 +162,11 @@ scoped_ptr<DeviceEvent> DeviceManagerUdev::ProcessMessage(udev_device* device) {
 
   DeviceEvent::DeviceType device_type;
   if (!strcmp(subsystem, "input") &&
-      base::StartsWithASCII(path, "/dev/input/event", true))
+      base::StartsWith(path, "/dev/input/event", base::CompareCase::SENSITIVE))
     device_type = DeviceEvent::INPUT;
   else if (!strcmp(subsystem, "drm") &&
-           base::StartsWithASCII(path, "/dev/dri/card", true))
+           base::StartsWith(path, "/dev/dri/card",
+                            base::CompareCase::SENSITIVE))
     device_type = DeviceEvent::DISPLAY;
   else
     return nullptr;