chroot_lib: Remove CamelCase variant of get_enter_args.

BUG=None
TEST=run_tests

Change-Id: Iae4a341de4d40b21650efdc9a9e91291182abea8
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/1823366
Tested-by: Alex Klein <saklein@chromium.org>
Commit-Queue: Alex Klein <saklein@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
diff --git a/api/router.py b/api/router.py
index a8fe569..d90e722 100644
--- a/api/router.py
+++ b/api/router.py
@@ -264,10 +264,12 @@
           cmd.append('--validate-only')
 
         try:
-          result = cros_build_lib.RunCommand(cmd, enter_chroot=True,
-                                             chroot_args=chroot.GetEnterArgs(),
-                                             error_code_ok=True,
-                                             extra_env=chroot.env)
+          result = cros_build_lib.RunCommand(
+              cmd,
+              enter_chroot=True,
+              chroot_args=chroot.get_enter_args(),
+              error_code_ok=True,
+              extra_env=chroot.env)
         except cros_build_lib.RunCommandError:
           # A non-zero return code will not result in an error, but one is still
           # thrown when the command cannot be run in the first place. This is