servo: Merge #5662 - Remove some as_slice calls in cef (from Ms2ger:cef-core); r=larsbergstrom

Source-Repo: https://github.com/servo/servo
Source-Revision: d16b102416128015a2a3296af69ed75195f3bd05

servo/ports/cef/command_line.rs

@@ -61,9 +61,9 @@ pub extern "C" fn command_line_get_switch_value(cmd: *mut cef_command_line_t, na
         let opt = String::from_utf16(slice).unwrap();
             //debug!("opt: {}", opt);
         for s in (*cl).argv.iter() {
-            let o = s.as_slice().trim_left_matches('-');
+            let o = s.trim_left_matches('-');
             //debug!("arg: {}", o);
-            if o.as_slice().starts_with(opt.as_slice()) {
+            if o.starts_with(&opt) {
                 let mut string = mem::uninitialized();
                 let arg = o[opt.len() + 1..].as_bytes();
                 let c_str = ffi::CString::new(arg).unwrap();

servo/ports/cef/window.rs

@@ -279,7 +279,7 @@ impl WindowMethods for Window {
                     None => visitor.visit(&[]),
                     Some(string) => {
                         let utf16_chars: Vec<u16> = Utf16Encoder::new(string.chars()).collect();
-                        visitor.visit(utf16_chars.as_slice())
+                        visitor.visit(&utf16_chars)
                     }
                 }
             }