--- a/servo/components/style/gecko_bindings/sugar/ns_compatibility.rs
+++ b/servo/components/style/gecko_bindings/sugar/ns_compatibility.rs
@@ -3,16 +3,17 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 //! Little helper for `nsCompatibility`.
 
 use context::QuirksMode;
 use gecko_bindings::structs::nsCompatibility;
 
 impl From<nsCompatibility> for QuirksMode {
+    #[inline]
     fn from(mode: nsCompatibility) -> QuirksMode {
         match mode {
             nsCompatibility::eCompatibility_FullStandards => QuirksMode::NoQuirks,
             nsCompatibility::eCompatibility_AlmostStandards => QuirksMode::LimitedQuirks,
             nsCompatibility::eCompatibility_NavQuirks => QuirksMode::Quirks,
         }
     }
 }

--- a/servo/components/style/properties/properties.mako.rs
+++ b/servo/components/style/properties/properties.mako.rs
@@ -588,28 +588,31 @@ impl NonCustomPropertyId {
             % endif
             % endfor
         ];
         COLLECT_FUNCTIONS[self.0](f);
     }
 }
 
 impl From<LonghandId> for NonCustomPropertyId {
+    #[inline]
     fn from(id: LonghandId) -> Self {
         NonCustomPropertyId(id as usize)
     }
 }
 
 impl From<ShorthandId> for NonCustomPropertyId {
+    #[inline]
     fn from(id: ShorthandId) -> Self {
         NonCustomPropertyId((id as usize) + ${len(data.longhands)})
     }
 }
 
 impl From<AliasId> for NonCustomPropertyId {
+    #[inline]
     fn from(id: AliasId) -> Self {
         NonCustomPropertyId(id as usize + ${len(data.longhands) + len(data.shorthands)})
     }
 }
 
 /// A set of all properties
 #[derive(Clone, PartialEq)]
 pub struct NonCustomPropertyIdSet {