Cleanup: Correctly spell success(ful).

ios/chrome/browser/find_in_page/find_in_page_controller.mm

 // 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.
 
 #import "ios/chrome/browser/find_in_page/find_in_page_controller.h"
 
 #import <UIKit/UIKit.h>
 #import <cmath>
 
 #include "base/ios/ios_util.h"
@@ skipping 32 matching lines @@
 - (void)findBarTextFieldDidResignFirstResponder:(NSNotification*)note;
 // Keyboard listeners.
 - (void)keyboardDidShow:(NSNotification*)note;
 - (void)keyboardWillHide:(NSNotification*)note;
 // Constantly injects the find string in page until
 // |disableFindInPageWithCompletionHandler:| is called or the find operation is
 // complete. Calls |completionHandler| if the find operation is complete.
 // |completionHandler| can be nil.
 - (void)startPumpingWithCompletionHandler:(ProceduralBlock)completionHandler;
 // Gives find in page more time to complete. Calls |completionHandler| with
-// a BOOL indicating if the find operation was successfull. |completionHandler|
+// a BOOL indicating if the find operation was successful. |completionHandler|
 // can be nil.
 - (void)pumpFindStringInPageWithCompletionHandler:
     (void (^)(BOOL))completionHandler;
 // Processes the result of a single find in page pump. Calls |completionHandler|
 // if pumping is done. Re-pumps if necessary.
 - (void)processPumpResult:(BOOL)finished
               scrollPoint:(CGPoint)scrollPoint
         completionHandler:(ProceduralBlock)completionHandler;
 // Prevent scrolling past the end of the page.
 - (CGPoint)limitOverscroll:(CRWWebViewScrollViewProxy*)scrollViewProxy
@@ skipping 305 matching lines @@
 
 - (BOOL)canReleaseDOMLock {
   return NO;
 }
 
 - (void)releaseDOMLockWithCompletionHandler:(ProceduralBlock)completionHandler {
   NOTREACHED();
 }
 
 @end