Revert of Replace TabModel with WebStateList in GoogleLandingController.

ios/chrome/browser/ui/ntp/google_landing_controller.mm

Index: ios/chrome/browser/ui/ntp/google_landing_controller.mm
diff --git a/ios/chrome/browser/ui/ntp/google_landing_controller.mm b/ios/chrome/browser/ui/ntp/google_landing_controller.mm
index 6775b127da0f93e592919a3ce43b1795027ca2ac..7f1d3c7340f3cc3c9e3de5856e7734dd8ea6218b 100644
--- a/ios/chrome/browser/ui/ntp/google_landing_controller.mm
+++ b/ios/chrome/browser/ui/ntp/google_landing_controller.mm
@@ -189,9 +189,6 @@
 
 // |YES| if a what's new promo can be displayed.
 @property(nonatomic, assign) BOOL promoCanShow;
-
-// The number of tabs to show in the google landing fake toolbar.
-@property(nonatomic, assign) int tabCount;
 
 // iPhone landscape uses a slightly different layout for the doodle and search
 // field frame. Returns the proper frame from |frames| based on orientation,
@@ -262,7 +259,6 @@
 @synthesize promoIcon = _promoIcon;
 @synthesize promoCanShow = _promoCanShow;
 @synthesize maximumMostVisitedSitesShown = _maximumMostVisitedSitesShown;
-@synthesize tabCount = _tabCount;
 @synthesize voiceSearchIsEnabled = _voiceSearchIsEnabled;
 
 - (void)loadView {
@@ -999,7 +995,6 @@
         // iPhone header also contains a toolbar since the normal toolbar is
         // hidden.
         [_headerView addToolbarWithDataSource:self.dataSource];
-        [_headerView setToolbarTabCount:self.tabCount];
       }
       [_supplementaryViews addObject:_headerView];
     }
@@ -1489,9 +1484,4 @@
   [_mostVisitedView reloadItemsAtIndexPaths:@[ indexPath ]];
 }
 
-- (void)setTabCount:(int)tabCount {
-  _tabCount = tabCount;
-  [_headerView setToolbarTabCount:self.tabCount];
-}
-
 @end