Remove legacy StartsWithASCII function.

ui/events/devices/device_util_linux.cc

Index: ui/events/devices/device_util_linux.cc
diff --git a/ui/events/devices/device_util_linux.cc b/ui/events/devices/device_util_linux.cc
index e53a1e4b2cecb22707a46f5139d45171a5866459..9f1f6329c7eb8381f6b58aa9e50fe638350d91bf 100644
--- a/ui/events/devices/device_util_linux.cc
+++ b/ui/events/devices/device_util_linux.cc
@@ -17,7 +17,9 @@ namespace ui {
 InputDeviceType GetInputDeviceTypeFromPath(const base::FilePath& path) {
   DCHECK(!base::MessageLoopForUI::IsCurrent());
   std::string event_node = path.BaseName().value();
-  if (event_node.empty() || !base::StartsWithASCII(event_node, "event", false))
+  if (event_node.empty() ||
+      !base::StartsWith(event_node, "event",
+                        base::CompareCase::INSENSITIVE_ASCII))
     return InputDeviceType::INPUT_DEVICE_UNKNOWN;
 
   // Find sysfs device path for this device.