[cros] Pass pepper plugin flag for Guest mode quoted.

This change will only work after session_manager change is submitted:
http://codereview.chromium.org/4734002

BUG=chromium-os:7526
TEST=Manual. Flash works in Guest mode.

Review URL: http://codereview.chromium.org/4743001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@65669 0039d316-1c4b-4281-b951-d872f2087c98
void LoginUtils::DoBrowserLaunch(Profile* profile) {
  BootTimesLoader::Get()->AddLoginTimeMarker("BrowserLaunched", false);
  if (!LoginUtils::Get()->IsBrowserLaunchEnabled())
    return;

  CommandLine::ForCurrentProcess()->InitFromArgv(
      CommandLine::ForCurrentProcess()->argv());

  VLOG(1) << "Launching browser...";
  BrowserInit browser_init;
  int return_code;
  browser_init.LaunchBrowser(*CommandLine::ForCurrentProcess(),
                             profile,
                             FilePath(),
                             true,
                             &return_code);
}

void LoginUtils::DoBrowserLaunch(Profile* profile) {
  BootTimesLoader::Get()->AddLoginTimeMarker("BrowserLaunched", false);
  if (!LoginUtils::Get()->IsBrowserLaunchEnabled())
    return;

  CommandLine::ForCurrentProcess()->InitFromArgv(
      CommandLine::ForCurrentProcess()->argv());

  VLOG(1) << "Launching browser...";
  BrowserInit browser_init;
  int return_code;
  browser_init.LaunchBrowser(*CommandLine::ForCurrentProcess(),
                             profile,
                             FilePath(),
                             true,
                             &return_code);
}
