[ChromeDriver] Add --verbose to desktop Java tests

Currently, only Android Chrome Java tests are run with --verbose switch.
Adding this switch to desktop Chrome Java tests, to ease debugging.

TBR=kereliuk@chromium.org

Change-Id: Ifd9523272ee52f1bcee0642f4267339f4b78e857
Reviewed-on: https://chromium-review.googlesource.com/1050567Reviewed-by: John Chen <johnchen@chromium.org>
Commit-Queue: John Chen <johnchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557302}

chrome/test/chromedriver/test/run_all_tests.py

@@ -241,7 +241,8 @@ def main():
                              chrome_version_name='v%s' % version_name)
       code2 = RunJavaTests(chromedriver, chrome=chrome_path,
                            chrome_version=version,
-                           chrome_version_name='v%s' % version_name)
+                           chrome_version_name='v%s' % version_name,
+                           verbose=True)
       code = code or code1 or code2
       _KillChromes()
       shutil.rmtree(temp_dir)