Add constructor overload which takes in single DriverService parameter

This pattern was already implemented in PhantomJSDriver, but not yet
in ChromeDriver and InternetExplorerDriver.

Signed-off-by: Jim Evans <[email protected]>

Author: yizeng

Diff for: dotnet/src/webdriver/Chrome/ChromeDriver.cs

@@ -82,6 +82,15 @@ public ChromeDriver(ChromeOptions options)
         {
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ChromeDriver"/> class using the specified driver service.
+        /// </summary>
+        /// <param name="service">The <see cref="ChromeDriverService"/> used to initialize the driver.</param>
+        public ChromeDriver(ChromeDriverService service)
+            : this(service, new ChromeOptions())
+        {
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="ChromeDriver"/> class using the specified path 
         /// to the directory containing ChromeDriver.exe.

Diff for: dotnet/src/webdriver/IE/InternetExplorerDriver.cs

@@ -85,6 +85,15 @@ public InternetExplorerDriver(InternetExplorerOptions options)
         {
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="InternetExplorerDriver"/> class using the specified driver service.
+        /// </summary>
+        /// <param name="service">The <see cref="InternetExplorerDriverService"/> used to initialize the driver.</param>
+        public InternetExplorerDriver(InternetExplorerDriverService service)
+            : this(service, new InternetExplorerOptions())
+        {
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="InternetExplorerDriver"/> class using the specified path 
         /// to the directory containing IEDriverServer.exe.