Remove some legacy versions of StartsWith and EndsWith.

components/storage_monitor/volume_mount_watcher_win.cc

Index: components/storage_monitor/volume_mount_watcher_win.cc
diff --git a/components/storage_monitor/volume_mount_watcher_win.cc b/components/storage_monitor/volume_mount_watcher_win.cc
index 6913f0384cb99bda49b47e502435b5b4ba1cd90c..168d2eb14dea19b21c28d6fd932dd62955dcce2c 100644
--- a/components/storage_monitor/volume_mount_watcher_win.cc
+++ b/components/storage_monitor/volume_mount_watcher_win.cc
@@ -70,7 +70,7 @@ DeviceType GetDeviceType(const base::string16& mount_point) {
   // Check device strings of the form "X:" and "\\.\X:"
   // For floppy drives, these will return strings like "/Device/Floppy0"
   base::string16 device = mount_point;
-  if (base::EndsWith(mount_point, L"\\", false))
+  if (base::EndsWith(mount_point, L"\\", base::CompareCase::INSENSITIVE_ASCII))
     device = mount_point.substr(0, mount_point.length() - 1);
   base::string16 device_path;
   base::string16 device_path_slash;