Test for missing newlines at end of file in tidy.py.

src/components/script/dom/bindings/str.rs

@@ -139,4 +139,4 @@ impl FromStr for ByteString {
     fn from_str(s: &str) -> Option<ByteString> {
         Some(ByteString::new(s.container_into_owned_bytes()))
     }
-}
+}

src/components/script/dom/file.rs

@@ -50,4 +50,4 @@ impl Reflectable for File {
     fn reflector<'a>(&'a self) -> &'a Reflector {
         self.blob.reflector()
     }
-}
+}

src/components/script/dom/urlsearchparams.rs

@@ -151,4 +151,4 @@ impl URLSearchParamsHelpers for URLSearchParams {
         // XXXManishearth Implement this when the URL interface is implemented
         // http://url.spec.whatwg.org/#concept-uq-update
     }
-}
+}

src/etc/tidy.py

@@ -31,6 +31,9 @@ def do_whitespace_check(name, contents):
     for idx, line in enumerate(contents):
         if line[-1] == "\n":
             line = line[:-1]
+        else:
+            report_error_name_no(name, idx + 1, "No newline at EOF")
+
         if line.endswith(' '):
             report_error_name_no(name, idx + 1, "trailing whitespace")