auto merge of #2520 : saneyuki/servo/mut, r=Ms2ger

Related #2514

- This removes needless `&mut self`s from some DOM type method simply.
- This doesn't include some DOM Types which have basis method called from other types (e.g. `Element`). We still have to need to open their changes.
- This does not include to remove an implicit `deref_mut()`.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/components/script/dom/htmlmodelement.rs b/src/components/script/dom/htmlmodelement.rs
index 3323ed3a72b..bc5bda15e4c 100644
--- a/src/components/script/dom/htmlmodelement.rs
+++ b/src/components/script/dom/htmlmodelement.rs
@@ -39,9 +39,9 @@ impl HTMLModElement {
 
 pub trait HTMLModElementMethods {
     fn Cite(&self) -> DOMString;
-    fn SetCite(&mut self, _cite: DOMString) -> ErrorResult;
+    fn SetCite(&self, _cite: DOMString) -> ErrorResult;
     fn DateTime(&self) -> DOMString;
-    fn SetDateTime(&mut self, _datetime: DOMString) -> ErrorResult;
+    fn SetDateTime(&self, _datetime: DOMString) -> ErrorResult;
 }
 
 impl<'a> HTMLModElementMethods for JSRef<'a, HTMLModElement> {
@@ -49,7 +49,7 @@ impl<'a> HTMLModElementMethods for JSRef<'a, HTMLModElement> {
         "".to_owned()
     }
 
-    fn SetCite(&mut self, _cite: DOMString) -> ErrorResult {
+    fn SetCite(&self, _cite: DOMString) -> ErrorResult {
         Ok(())
     }
 
@@ -57,7 +57,7 @@ impl<'a> HTMLModElementMethods for JSRef<'a, HTMLModElement> {
         "".to_owned()
     }
 
-    fn SetDateTime(&mut self, _datetime: DOMString) -> ErrorResult {
+    fn SetDateTime(&self, _datetime: DOMString) -> ErrorResult {
         Ok(())
     }
 }