[ios] Hoists the FindInPageModel up into the controller.

ios/chrome/browser/find_in_page/find_in_page_controller.h

 // Copyright 2012 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_FIND_IN_PAGE_FIND_IN_PAGE_CONTROLLER_H_
 #define IOS_CHROME_BROWSER_FIND_IN_PAGE_FIND_IN_PAGE_CONTROLLER_H_
 
 #import <Foundation/Foundation.h>
 
 #include "base/ios/block_types.h"
 
 namespace web {
 class WebState;
 }
 
 @class FindInPageModel;
 
 extern NSString* const kFindBarTextFieldWillBecomeFirstResponderNotification;
 extern NSString* const kFindBarTextFieldDidResignFirstResponderNotification;
 
 @protocol FindInPageControllerDelegate<NSObject>
 // Informs the delegate when the scroll position is about to be changed on the
 // page.
 - (void)willAdjustScrollPosition;
 @end
 
 @interface FindInPageController : NSObject
 
+// Find In Page model.
+@property(nonatomic, readonly, strong) FindInPageModel* findInPageModel;
+
 // Designated initializer.
 - (id)initWithWebState:(web::WebState*)webState
               delegate:(id<FindInPageControllerDelegate>)delegate;
 // Inject the find in page scripts into the web state.
 - (void)initFindInPage;
-// Find In Page model. TODO(justincohen) consider using find_tab_helper.cc.
-- (FindInPageModel*)findInPageModel;
 // Is Find In Page available right now (given the state of the WebState)?
 - (BOOL)canFindInPage;
 // Find |query| in page, update model with results of find. Calls
 // |completionHandler| after the find operation is complete. |completionHandler|
 // can be nil.
 - (void)findStringInPage:(NSString*)query
        completionHandler:(ProceduralBlock)completionHandler;
 // Move to the next find result based on |-findInPageModel|, and scroll to
 // match. Calls |completionHandler| when the next string has been found.
 // |completionHandler| can be nil.
@@ skipping 18 matching lines @@
 // Instructs the controller to detach itself from the web state.
 - (void)detachFromWebState;
 
 // Sets the search term to |string|. Stored until the application quit.
 + (void)setSearchTerm:(NSString*)string;
 // The search term, stored until the application quit.
 + (NSString*)searchTerm;
 @end
 
 #endif  // IOS_CHROME_BROWSER_FIND_IN_PAGE_FIND_IN_PAGE_CONTROLLER_H_