[java] Refactoring OutputType.FILE#save (#9309)

Leveraging Java 7 Files class.

Author: alb-i986

java/client/src/org/openqa/selenium/OutputType.java

@@ -18,9 +18,9 @@
 package org.openqa.selenium;
 
 import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
-import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.Base64;
 
 /**
@@ -85,15 +85,11 @@ public File convertFromPngBytes(byte[] data) {
 
     private File save(byte[] data) {
       try {
-        File tmpFile = File.createTempFile("screenshot", ".png");
+        Path tmpFilePath = Files.createTempFile("screenshot", ".png");
+        File tmpFile = tmpFilePath.toFile();
         tmpFile.deleteOnExit();
-
-        try (OutputStream stream = new FileOutputStream(tmpFile)) {
-          stream.write(data);
-          return tmpFile;
-        } catch (IOException e) {
-          throw new WebDriverException(e);
-        }
+        Files.write(tmpFilePath, data);
+        return tmpFile;
       } catch (IOException e) {
         throw new WebDriverException(e);
       }