Revert 179916. It breaks on Mac.

chrome/browser/ui/webui/extensions/extension_settings_handler.cc

Index: chrome/browser/ui/webui/extensions/extension_settings_handler.cc
===================================================================
--- chrome/browser/ui/webui/extensions/extension_settings_handler.cc	(revision 182273)
+++ chrome/browser/ui/webui/extensions/extension_settings_handler.cc	(working copy)
@@ -307,8 +307,6 @@
       l10n_util::GetStringUTF16(IDS_EXTENSIONS_RELOAD_UNPACKED));
   source->AddString("extensionSettingsOptions",
       l10n_util::GetStringUTF16(IDS_EXTENSIONS_OPTIONS_LINK));
-  source->AddString("extensionSettingsPermissions",
-      l10n_util::GetStringUTF16(IDS_EXTENSIONS_PERMISSIONS_LINK));
   source->AddString("extensionSettingsActivity",
       l10n_util::GetStringUTF16(IDS_EXTENSIONS_ACTIVITY_LINK));
   source->AddString("extensionSettingsVisitWebsite",
@@ -403,9 +401,6 @@
   web_ui()->RegisterMessageCallback("extensionSettingsOptions",
       base::Bind(&ExtensionSettingsHandler::HandleOptionsMessage,
                  base::Unretained(this)));
-  web_ui()->RegisterMessageCallback("extensionSettingsPermissions",
-      base::Bind(&ExtensionSettingsHandler::HandlePermissionsMessage,
-                 base::Unretained(this)));
   web_ui()->RegisterMessageCallback("extensionSettingsShowButton",
       base::Bind(&ExtensionSettingsHandler::HandleShowButtonMessage,
                  base::Unretained(this)));
@@ -514,14 +509,6 @@
   MaybeUpdateAfterNotification();
 }
 
-void ExtensionSettingsHandler::InstallUIProceed() {
-  // This should never happen. The dialog only has a cancel button.
-  NOTREACHED();
-}
-
-void ExtensionSettingsHandler::InstallUIAbort(bool user_initiated) {
-}
-
 void ExtensionSettingsHandler::ReloadUnpackedExtensions() {
   const ExtensionSet* extensions = extension_service_->extensions();
   std::vector<const Extension*> unpacked_extensions;
@@ -811,18 +798,6 @@
           chrome::FindBrowserWithWebContents(web_ui()->GetWebContents()));
 }
 
-void ExtensionSettingsHandler::HandlePermissionsMessage(const ListValue* args) {
-  std::string extension_id(UTF16ToUTF8(ExtractStringValue(args)));
-  CHECK(!extension_id.empty());
-  const Extension* extension =
-      extension_service_->GetExtensionById(extension_id, true);
-  if (!extension)
-    return;
-
-  prompt_.reset(new ExtensionInstallPrompt(web_contents()));
-  prompt_->ReviewPermissions(this, extension);
-}
-
 void ExtensionSettingsHandler::HandleShowButtonMessage(const ListValue* args) {
   const Extension* extension = GetActiveExtension(args);
   if (!extension)