In chromedriver, add /log url to get the contents of the chromedriver log
remotely. Also add a 'chrome.verbose' boolean startup option.
Remove usage of VLOG(1) in chromedriver. We do not need as complicated
logging as in Chrome.
BUG=85241
TEST=none

Review URL: http://codereview.chromium.org/7104085

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@88591 0039d316-1c4b-4281-b951-d872f2087c98
void Automation::GetChromeDriverAutomationVersion(int* version, Error** error) {
  std::string error_msg;
  if (!SendGetChromeDriverAutomationVersion(automation(), version, &error_msg))
    *error = new Error(kUnknownError, error_msg);
}

void Automation::GetChromeDriverAutomationVersion(int* version, Error** error) {
  std::string error_msg;
  if (!SendGetChromeDriverAutomationVersion(automation(), version, &error_msg))
    *error = new Error(kUnknownError, error_msg);
}
