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

ios/clean/chrome/browser/ui/commands/find_in_page_search_commands.h

Index: ios/clean/chrome/browser/ui/commands/find_in_page_search_commands.h
diff --git a/ios/clean/chrome/browser/ui/commands/find_in_page_search_commands.h b/ios/clean/chrome/browser/ui/commands/find_in_page_search_commands.h
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index 0000000000000000000000000000000000000000..d44a08e65f803d0eb0945e2bd3a9fdabaa55fc93
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+++ b/ios/clean/chrome/browser/ui/commands/find_in_page_search_commands.h
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+// 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_COMMANDS_FIND_IN_PAGE_SEARCH_COMMANDS_H_
+#define IOS_CLEAN_CHROME_BROWSER_UI_COMMANDS_FIND_IN_PAGE_SEARCH_COMMANDS_H_
+
+// Command protocol for commands relating to Find In Page.
+@protocol FindInPageSearchCommands
+
+// Searches for the given string in the current page.
+- (void)findStringInPage:(NSString*)searchTerm;
+
+// Finds the previous and next matches, using the current search string. Shows
+// the Find in Page UI without initiating a search if there is no current search
+// string.
+- (void)findNextInPage;
+- (void)findPreviousInPage;
+
+@end
+
+#endif  // IOS_CLEAN_CHROME_BROWSER_UI_COMMANDS_FIND_IN_PAGE_SEARCH_COMMANDS_H_