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
CreateSession::CreateSession(const std::vector<std::string>& path_segments,
                             const DictionaryValue* const parameters)
    : Command(path_segments, parameters) {}

CreateSession::CreateSession(const std::vector<std::string>& path_segments,
                             const DictionaryValue* const parameters)
    : Command(path_segments, parameters) {}
