linter 0.1.54


* new `unnecessary_const` lint
* new `unnecessary_new` lint
* fixed errors in `use_to_and_as_if_applicable`
* new `file_names` lint

Change-Id: Ic461249050277ea81ade7a90b92506c6041ac480
Reviewed-on: https://dart-review.googlesource.com/61280
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
diff --git a/DEPS b/DEPS
index 94230ce..ae550dd 100644
--- a/DEPS
+++ b/DEPS
@@ -94,7 +94,7 @@
   "intl_tag": "0.15.2",
   "jinja2_rev": "2222b31554f03e62600cd7e383376a7c187967a1",
   "json_rpc_2_tag": "2.0.6",
-  "linter_tag": "0.1.53",
+  "linter_tag": "0.1.54",
   "logging_tag": "0.11.3+1",
   "markdown_tag": "2.0.0",
   "matcher_tag": "0.12.1+4",