[ios] Adds support for Find in Page to the new architecture.

ios/clean/chrome/browser/ui/find_in_page/find_in_page_mediator.h

Index: ios/clean/chrome/browser/ui/find_in_page/find_in_page_mediator.h
diff --git a/ios/clean/chrome/browser/ui/find_in_page/find_in_page_mediator.h b/ios/clean/chrome/browser/ui/find_in_page/find_in_page_mediator.h
new file mode 100644
index 0000000000000000000000000000000000000000..643d6ab3e4de8315dce36bfd4731bdf1031c752c
--- /dev/null
+++ b/ios/clean/chrome/browser/ui/find_in_page/find_in_page_mediator.h
@@ -0,0 +1,34 @@
+// Copyright 2017 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_CLEAN_CHROME_BROWSER_UI_FIND_IN_PAGE_FIND_IN_PAGE_MEDIATOR_H_
+#define IOS_CLEAN_CHROME_BROWSER_UI_FIND_IN_PAGE_FIND_IN_PAGE_MEDIATOR_H_
+
+#import <Foundation/Foundation.h>
+
+#include "base/macros.h"
+#include "ios/shared/chrome/browser/tabs/web_state_list_observer.h"
+#include "ios/web/public/web_state/web_state_observer.h"
+
+@protocol FindInPageVisibilityCommands;
+@protocol FindInPageConsumer;
+@class FindInPageModel;
+
+class WebStateList;
+
+@protocol FindInPageConsumerProvider
+@property(nonatomic, readonly, weak) id<FindInPageConsumer> consumer;
+@end
+
+@interface FindInPageMediator : NSObject
+
+- (instancetype)initWithWebStateList:(WebStateList*)webStateList
+                          provider:(id<FindInPageConsumerProvider>)provider
+                        dispatcher:(id<FindInPageVisibilityCommands>)dispatcher NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+#endif  // IOS_CLEAN_CHROME_BROWSER_UI_FIND_IN_PAGE_FIND_IN_PAGE_MEDIATOR_H_