Remove ContextMenuController.

ios/chrome/browser/ui/context_menu/context_menu_provider.h

Index: ios/chrome/browser/ui/context_menu/context_menu_provider.h
diff --git a/ios/chrome/browser/ui/context_menu/context_menu_provider.h b/ios/chrome/browser/ui/context_menu/context_menu_provider.h
deleted file mode 100644
index aa28d426eac21b77f3329c6bf647584f8ecee1d2..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/ui/context_menu/context_menu_provider.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// 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.
-
-#ifndef IOS_CHROME_BROWSER_UI_CONTEXT_MENU_CONTEXT_MENU_PROVIDER_H_
-#define IOS_CHROME_BROWSER_UI_CONTEXT_MENU_CONTEXT_MENU_PROVIDER_H_
-
-// A protocol implemented by a provider of labels and actions for a context
-// menu.
-@protocol ContextMenuProvider<NSObject>
-
-// Returns a ContextMenuHolder with the titles and actions associated with
-// each menu item. The "Cancel" item is automatically added when constructing
-// the menu for presentation, therefore it should not be added to the list.
-// Each ContextMenuProvider might have different requirements for the
-// |contextDictionary|. On a web page |kContextLinkURLString| and
-// |kContextImageURLString| might both be set whereas on a recently visited
-// entry some other identifier will be passed on.
-- (ContextMenuHolder*)contextMenuForDictionary:(NSDictionary*)context;
-
-@end
-
-#endif  // IOS_CHROME_BROWSER_UI_CONTEXT_MENU_CONTEXT_MENU_PROVIDER_H_