remove BodyEncoding trait (#2565)

actix-http/src/header/map.rs

@@ -6,7 +6,7 @@ use ahash::AHashMap;
 use http::header::{HeaderName, HeaderValue};
 use smallvec::{smallvec, SmallVec};
 
-use crate::header::AsHeaderName;
+use super::AsHeaderName;
 
 /// A multi-map of HTTP headers.
 ///

actix-http/src/header/mod.rs

@@ -50,10 +50,10 @@ pub use self::utils::{
 
 /// An interface for types that already represent a valid header.
 pub trait Header: TryIntoHeaderValue {
-    /// Returns the name of the header field
+    /// Returns the name of the header field.
     fn name() -> HeaderName;
 
-    /// Parse a header
+    /// Parse the header from a HTTP message.
     fn parse<M: HttpMessage>(msg: &M) -> Result<Self, ParseError>;
 }
 

actix-http/src/header/shared/content_encoding.rs

@@ -68,6 +68,7 @@ impl ContentEncoding {
 }
 
 impl Default for ContentEncoding {
+    #[inline]
     fn default() -> Self {
         Self::Identity
     }