[ios clean] Add placeholder for NTP bookmarks, chrome home and open tabs.

ios/clean/chrome/browser/ui/ntp/ntp_mediator.mm

+
+// Copyright 2017 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 "ios/clean/chrome/browser/ui/ntp/ntp_mediator.h"
+
+#import "ios/chrome/browser/ui/ntp/new_tab_page_bar_item.h"
+#import "ios/chrome/browser/ui/ntp/new_tab_page_controller.h"
+#include "ios/chrome/browser/ui/ui_util.h"
+#include "ios/chrome/grit/ios_strings.h"
+#import "ios/clean/chrome/browser/ui/ntp/ntp_consumer.h"
+#include "ui/base/l10n/l10n_util.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@interface NTPMediator ()
+@property(nonatomic, strong) id<NTPConsumer> consumer;
+@end
+
+@implementation NTPMediator
+
+@synthesize consumer = _consumer;
+
+- (instancetype)initWithConsumer:(id<NTPConsumer>)consumer {
+  self = [super init];
+  if (self) {
+    _consumer = consumer;
+    [self setTabBarItems];
+  }
+  return self;
+}
+
+- (void)setTabBarItems {
+  NSString* mostVisited = l10n_util::GetNSString(IDS_IOS_NEW_TAB_MOST_VISITED);
+  NSString* bookmarks =
+      l10n_util::GetNSString(IDS_IOS_NEW_TAB_BOOKMARKS_PAGE_TITLE_MOBILE);
+  NSString* openTabs = l10n_util::GetNSString(IDS_IOS_NEW_TAB_RECENT_TABS);
+
+  NSMutableArray* tabBarItems = [NSMutableArray array];
+
+  NewTabPageBarItem* mostVisitedItem = [NewTabPageBarItem
+      newTabPageBarItemWithTitle:mostVisited
+                      identifier:NewTabPage::kMostVisitedPanel
+                           image:[UIImage imageNamed:@"ntp_mv_search"]];
+  NewTabPageBarItem* bookmarksItem = [NewTabPageBarItem
+      newTabPageBarItemWithTitle:bookmarks
+                      identifier:NewTabPage::kBookmarksPanel
+                           image:[UIImage imageNamed:@"ntp_bookmarks"]];
+  [tabBarItems addObject:bookmarksItem];
+  if (IsIPadIdiom()) {
+    [tabBarItems addObject:mostVisitedItem];
+  }
+
+  NewTabPageBarItem* openTabsItem = [NewTabPageBarItem
+      newTabPageBarItemWithTitle:openTabs
+                      identifier:NewTabPage::kOpenTabsPanel
+                           image:[UIImage imageNamed:@"ntp_opentabs"]];
+  [tabBarItems addObject:openTabsItem];
+
+  [self.consumer setBarItems:[tabBarItems copy]];
+}
+
+@end