Remove legacy InfoBarViewProtocol.

ios/public/provider/chrome/browser/chrome_browser_provider.h

 // Copyright 2013 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.
 
 #ifndef IOS_PUBLIC_PROVIDER_CHROME_BROWSER_CHROME_BROWSER_PROVIDER_H_
 #define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_CHROME_BROWSER_PROVIDER_H_
 
 #include <CoreGraphics/CoreGraphics.h>
 #import <Foundation/Foundation.h>
 #include <stddef.h>
@@ skipping 21 matching lines @@
 
 namespace web {
 class WebState;
 }
 
 namespace sync_sessions {
 class SyncedWindowDelegatesGetter;
 }
 
 @protocol AppRatingPrompt;
-@protocol InfoBarViewProtocol;
 @protocol LogoVendor;
 @protocol TextFieldStyling;
 @protocol NativeAppWhitelistManager;
 @class UITextField;
 @class UIView;
 @protocol UrlLoader;
-typedef UIView<InfoBarViewProtocol>* InfoBarViewPlaceholder;
 
 namespace ios {
 
 class ChromeBrowserProvider;
 class ChromeBrowserState;
 class ChromeIdentityService;
 class GeolocationUpdaterProvider;
 class SigninErrorProvider;
 class SigninResourcesProvider;
 
@@ skipping 112 matching lines @@
   // not dismiss them.
   virtual void LogIfModalViewsArePresented() const;
 
   // Returns an instance of the spotlight provider.
   virtual SpotlightProvider* GetSpotlightProvider() const;
 };
 
 }  // namespace ios
 
 #endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_CHROME_BROWSER_PROVIDER_H_