[ios] Dispatcher for tab_strip and tab_grid.

ios/clean/chrome/browser/ui/tab_grid/tab_grid_view_controller.mm

 // Copyright 2016 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/tab_grid/tab_grid_view_controller.h"
 
 #include "base/mac/foundation_util.h"
-#import "ios/chrome/browser/ui/tab_switcher/tab_switcher_panel_collection_view_layout.h"
 #import "ios/chrome/browser/ui/tab_switcher/tab_switcher_panel_overlay_view.h"
 #import "ios/clean/chrome/browser/ui/actions/settings_actions.h"
 #import "ios/clean/chrome/browser/ui/actions/tab_grid_actions.h"
 #import "ios/clean/chrome/browser/ui/commands/settings_commands.h"
-#import "ios/clean/chrome/browser/ui/commands/tab_commands.h"
 #import "ios/clean/chrome/browser/ui/commands/tab_grid_commands.h"
 #import "ios/clean/chrome/browser/ui/tab_collection/tab_collection_data_source.h"
 #import "ios/clean/chrome/browser/ui/tab_collection/tab_collection_tab_cell.h"
 #import "ios/clean/chrome/browser/ui/tab_grid/mdc_floating_button+cr_tab_grid.h"
 #import "ios/clean/chrome/browser/ui/tab_grid/tab_grid_collection_view_layout.h"
 #import "ios/clean/chrome/browser/ui/tab_grid/tab_grid_toolbar.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 @interface TabGridViewController ()<SettingsActions, TabGridActions>
 @property(nonatomic, weak) UIView* noTabsOverlay;
 @property(nonatomic, weak) TabGridToolbar* toolbar;
 @property(nonatomic, weak) MDCFloatingButton* floatingNewTabButton;
 @end
 
 @implementation TabGridViewController
-@synthesize settingsCommandHandler = _settingsCommandHandler;
-@synthesize tabGridCommandHandler = _tabGridCommandHandler;
+@synthesize dispatcher = _dispatcher;
 @synthesize noTabsOverlay = _noTabsOverlay;
 @synthesize toolbar = _toolbar;
 @synthesize floatingNewTabButton = _floatingNewTabButton;
 
 #pragma mark - Required subclass override
 
 - (UICollectionViewLayout*)collectionViewLayout {
   return [[TabGridCollectionViewLayout alloc] init];
 }
 
+- (void)showTabAtIndex:(int)index {
+  [self.dispatcher showTabGridTabAtIndex:index];
+}
+
+- (void)closeTabAtIndex:(int)index {
+  [self.dispatcher closeTabGridTabAtIndex:index];
+}
+
 #pragma mark - View lifecyle
 
 - (void)viewDidLoad {
   [super viewDidLoad];
 
   TabGridToolbar* toolbar = [[TabGridToolbar alloc] init];
   self.toolbar = toolbar;
   [self.view addSubview:self.toolbar];
   self.toolbar.translatesAutoresizingMaskIntoConstraints = NO;
   [NSLayoutConstraint activateConstraints:@[
@@ skipping 21 matching lines @@
 
 - (void)viewDidLayoutSubviews {
   [super viewDidLayoutSubviews];
   self.tabs.contentInset =
       UIEdgeInsetsMake(CGRectGetMaxY(self.toolbar.frame), 0, 0, 0);
 }
 
 #pragma mark - SettingsActions
 
 - (void)showSettings:(id)sender {
-  [self.settingsCommandHandler showSettings];
+  [self.dispatcher showSettings];
 }
 
 #pragma mark - TabGridActions
 
 - (void)showTabGrid:(id)sender {
-  [self.tabGridCommandHandler showTabGrid];
+  [self.dispatcher showTabGrid];
 }
 
 - (void)createNewTab:(id)sender {
-  [self.tabCommandHandler createAndShowNewTab];
+  [self.dispatcher createAndShowNewTabInTabGrid];
 }
 
 #pragma mark - ZoomTransitionDelegate methods
 
 - (CGRect)rectForZoomWithKey:(NSObject*)key inView:(UIView*)view {
   NSIndexPath* cellPath = base::mac::ObjCCastStrict<NSIndexPath>(key);
   if (!key)
     return CGRectNull;
   UICollectionViewCell* cell = [self.tabs cellForItemAtIndexPath:cellPath];
   return [view convertRect:cell.bounds fromView:cell];
@@ skipping 14 matching lines @@
       UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
   [self.tabs addSubview:overlayView];
   self.noTabsOverlay = overlayView;
 }
 
 - (void)removeNoTabsOverlay {
   [self.noTabsOverlay removeFromSuperview];
 }
 
 @end