pulled has_arg out of its specific browsers capabilities

thirtyfour/src/common/capabilities/chromium.rs

@@ -91,11 +91,6 @@ pub trait ChromiumLikeCapabilities: BrowserCapabilitiesHelper {
         self.insert_browser_option("args", to_value(args)?)
     }
 
-    /// Return true if the specified arg is currently set.
-    fn has_arg(&self, arg: &str) -> bool {
-        self.args().iter().any(|s| s == arg)
-    }
-
     /// Add the specified experimental option.
     ///
     /// ## Example

thirtyfour/src/common/capabilities/desiredcapabilities.rs

@@ -234,11 +234,6 @@ pub trait BrowserCapabilitiesHelper: CapabilitiesHelper {
     /// The key containing the browser-specific capabilities.
     const KEY: &'static str;
 
-    /// Get the current list of command-line arguments to `geckodriver` as a vec.
-    fn args(&self) -> Vec<String> {
-        self.browser_option("args").unwrap_or_default()
-    }
-
     /// Add any Serialize-able object to the capabilities under the browser's custom key.
     fn insert_browser_option(
         &mut self,
@@ -271,6 +266,11 @@ pub trait BrowserCapabilitiesHelper: CapabilitiesHelper {
             .and_then(|option| from_value(option.clone()).ok())
     }
 
+    /// Get the current list of command-line arguments to `geckodriver` as a vec.
+    fn args(&self) -> Vec<String> {
+        self.browser_option("args").unwrap_or_default()
+    }
+
     /// Remove the specified Chrome command-line argument if it had been added previously.
     fn remove_arg(&mut self, arg: &str) -> WebDriverResult<()> {
         let mut args = self.args();
@@ -281,6 +281,11 @@ pub trait BrowserCapabilitiesHelper: CapabilitiesHelper {
             self.insert_browser_option("args", to_value(args)?)
         }
     }
+
+    /// Return true if the specified arg is currently set.
+    fn has_arg(&self, arg: &str) -> bool {
+        self.args().iter().any(|s| s == arg)
+    }
 }
 
 impl CapabilitiesHelper for Capabilities {

thirtyfour/src/common/capabilities/firefox.rs

@@ -112,11 +112,6 @@ impl FirefoxCapabilities {
         self.insert_browser_option("args", to_value(args)?)
     }
 
-    /// Return true if the specified arg is currently set.
-    pub fn has_arg(&self, arg: &str) -> bool {
-        self.args().contains(&arg.to_string())
-    }
-
     firefox_arg_wrapper! {
         headless => "-headless"
     }