Limit extent of webstore app to just chrome.google.com/webstore.

BUG=93497
TEST=Try installing extensions and apps from the webstore, starting both being
initially logged in, and not.


Review URL: http://codereview.chromium.org/7719003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@97986 0039d316-1c4b-4281-b951-d872f2087c98
bool ExtensionService::CanCrossIncognito(const Extension* extension) {
  return IsIncognitoEnabled(extension->id()) &&
      !extension->incognito_split_mode();
}

bool ExtensionService::CanCrossIncognito(const Extension* extension) {
  return IsIncognitoEnabled(extension->id()) &&
      !extension->incognito_split_mode();
}
