Add facility to fix about: and file: links from chrome:// pages.

chrome/browser/dom_ui/options/content_settings_handler.cc

Index: chrome/browser/dom_ui/options/content_settings_handler.cc
diff --git a/chrome/browser/dom_ui/options/content_settings_handler.cc b/chrome/browser/dom_ui/options/content_settings_handler.cc
index 3220127824fbb9b3446ec2405177e91e82265665..cf7b642a33798d6bf4e18e9467f84fc618ee1963 100644
--- a/chrome/browser/dom_ui/options/content_settings_handler.cc
+++ b/chrome/browser/dom_ui/options/content_settings_handler.cc
@@ -597,9 +597,6 @@ void ContentSettingsHandler::RegisterMessages() {
   dom_ui_->RegisterMessageCallback("checkExceptionPatternValidity",
       NewCallback(this,
                   &ContentSettingsHandler::CheckExceptionPatternValidity));
-  dom_ui_->RegisterMessageCallback(
-      "openPluginsTab",
-      NewCallback(this, &ContentSettingsHandler::OpenPluginsTab));
 }
 
 void ContentSettingsHandler::SetContentFilter(const ListValue* args) {
@@ -745,10 +742,6 @@ void ContentSettingsHandler::CheckExceptionPatternValidity(
                                                        *valid_value.get());
 }
 
-void ContentSettingsHandler::OpenPluginsTab(const ListValue* args) {
-  BrowserList::GetLastActive()->OpenPluginsTabAndActivate();
-}
-
 // static
 std::string ContentSettingsHandler::ContentSettingsTypeToGroupName(
     ContentSettingsType type) {