Remove http package

remote.go

@@ -19,8 +19,6 @@ import (
 
 	"github.com/blang/semver"
 	"github.com/tebeka/selenium/firefox"
-	"github.com/tebeka/selenium/http/headers"
-	"github.com/tebeka/selenium/http/mediatypes"
 	"github.com/tebeka/selenium/log"
 )
 
@@ -61,15 +59,18 @@ type remoteWD struct {
 // server.
 var HTTPClient = http.DefaultClient
 
+// jsonContentType is JSON content type.
+const jsonContentType = "application/json"
+
 func newRequest(method string, url string, data []byte) (*http.Request, error) {
 	request, err := http.NewRequest(method, url, bytes.NewBuffer(data))
 	if err != nil {
 		return nil, err
 	}
 	if data != nil {
-		request.Header.Add(headers.ContentType, mediatypes.ApplicationJSONUtf8)
+		request.Header.Add("Content-Type", jsonContentType)
 	}
-	request.Header.Add(headers.Accept, mediatypes.ApplicationJSON)
+	request.Header.Add("Accept", jsonContentType)
 
 	return request, nil
 }
@@ -150,19 +151,19 @@ func executeCommand(method, url string, data []byte) (json.RawMessage, error) {
 				buf = prettyBuf.Bytes()
 			}
 		}
-		debugLog("<- %s [%s]\n%s", response.Status, response.Header[headers.ContentType], buf)
+		debugLog("<- %s [%s]\n%s", response.Status, response.Header["Content-Type"], buf)
 	}
 	if err != nil {
 		return nil, errors.New(response.Status)
 	}
 
-	fullCType := response.Header.Get(headers.ContentType)
+	fullCType := response.Header.Get("Content-Type")
 	cType, _, err := mime.ParseMediaType(fullCType)
 	if err != nil {
-		return nil, fmt.Errorf("got content type header %q, expected %q", fullCType, mediatypes.ApplicationJSON)
+		return nil, fmt.Errorf("got content type header %q, expected %q", fullCType, jsonContentType)
 	}
-	if cType != mediatypes.ApplicationJSON {
-		return nil, fmt.Errorf("got content type %q, expected %q", cType, mediatypes.ApplicationJSON)
+	if cType != jsonContentType {
+		return nil, fmt.Errorf("got content type %q, expected %q", cType, jsonContentType)
 	}
 
 	reply := new(serverReply)