[ios] Remove IDC_BACK and IDC_FORWARD

ios/chrome/browser/ui/ntp/new_tab_page_toolbar_controller.h

Index: ios/chrome/browser/ui/ntp/new_tab_page_toolbar_controller.h
diff --git a/ios/chrome/browser/ui/ntp/new_tab_page_toolbar_controller.h b/ios/chrome/browser/ui/ntp/new_tab_page_toolbar_controller.h
index 8e90625301db14ae1d15551bb3afb9a5dd146b5f..d3edf794a894ed5d69532168b571cdc9edd0106a 100644
--- a/ios/chrome/browser/ui/ntp/new_tab_page_toolbar_controller.h
+++ b/ios/chrome/browser/ui/ntp/new_tab_page_toolbar_controller.h
@@ -7,9 +7,10 @@
 
 #import "ios/chrome/browser/ui/toolbar/toolbar_controller.h"
 
+@protocol BrowserCommands;
 @protocol GoogleLandingDataSource;
-@protocol UrlLoader;
 @protocol OmniboxFocuser;
+@protocol UrlLoader;
 @protocol WebToolbarDelegate;
 
 // New tab page specific toolbar. The background view is hidden and the
@@ -22,8 +23,9 @@
 // ToolbarControllerStyleLightMode.
 - (instancetype)init;
 
-@property(nonatomic, weak) id<UrlLoader, OmniboxFocuser, WebToolbarDelegate>
-    dispatcher;
+@property(nonatomic, weak)
+    id<BrowserCommands, OmniboxFocuser, UrlLoader, WebToolbarDelegate>
+        dispatcher;
 
 // |YES| if the toolbar can show the forward arrow.
 - (void)setCanGoForward:(BOOL)canGoForward;