[i18n-fixlet] Make strings branding specific in extension code.

IDS_EXTENSIONS_UNINSTALL
IDS_EXTENSIONS_INCOGNITO_WARNING
IDS_EXTENSION_INSTALLED_HEADING
IDS_EXTENSION_ALERT_ITEM_EXTERNAL And fix a $1 $1 bug.
IDS_EXTENSION_INLINE_INSTALL_PROMPT_TITLE

BUG=NONE
TEST=NONE


Review URL: http://codereview.chromium.org/9107061

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@118018 0039d316-1c4b-4281-b951-d872f2087c98
bool ExtensionGlobalError::HasBubbleView() {
  return true;
}

bool ExtensionGlobalError::HasBubbleView() {
  return true;
}
