Remove dead Page Info permission strings and associated code.

chrome/browser/ui/cocoa/page_info/page_info_bubble_controller.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/page_info/page_info_bubble_controller.h"
 
 #import <AppKit/AppKit.h>
 
 #include <cmath>
 
@@ skipping 1097 matching lines @@
 }
 
 - (void)setPermissionInfo:(const PermissionInfoList&)permissionInfoList
          andChosenObjects:(ChosenObjectInfoList)chosenObjectInfoList {
   [permissionsView_ setSubviews:[NSArray array]];
   NSPoint controlOrigin = NSMakePoint(kSectionHorizontalPadding, 0);
 
   permissionsPresent_ = YES;
 
   if (permissionInfoList.size() > 0 || chosenObjectInfoList.size() > 0) {
-    base::string16 sectionTitle =
-        l10n_util::GetStringUTF16(IDS_PAGE_INFO_TITLE_SITE_PERMISSIONS);
-
     for (const auto& permission : permissionInfoList) {
       controlOrigin.y += kPermissionsVerticalSpacing;
       NSPoint rowBottomRight = [self addPermission:permission
                                             toView:permissionsView_
                                            atPoint:controlOrigin];
       controlOrigin.y = rowBottomRight.y;
     }
 
     for (auto& object : chosenObjectInfoList) {
       controlOrigin.y += kPermissionsVerticalSpacing;
@@ skipping 88 matching lines @@
 void PageInfoUIBridge::SetCookieInfo(const CookieInfoList& cookie_info_list) {
   [bubble_controller_ setCookieInfo:cookie_info_list];
 }
 
 void PageInfoUIBridge::SetPermissionInfo(
     const PermissionInfoList& permission_info_list,
     ChosenObjectInfoList chosen_object_info_list) {
   [bubble_controller_ setPermissionInfo:permission_info_list
                        andChosenObjects:std::move(chosen_object_info_list)];
 }