Clean up unneeded JavaScript dialog parameter.

chrome/browser/ui/javascript_dialogs/javascript_dialog_tab_helper.cc

 // 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.
 
 #include "chrome/browser/ui/javascript_dialogs/javascript_dialog_tab_helper.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/feature_list.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 224 matching lines @@
     return true;
   }
 
   // Handle any app-modal dialogs being run by the app-modal dialog system.
   return AppModalDialogManager()->HandleJavaScriptDialog(web_contents, accept,
                                                          prompt_override);
 }
 
 void JavaScriptDialogTabHelper::CancelDialogs(
     content::WebContents* web_contents,
-    bool suppress_callbacks,
     bool reset_state) {
   if (dialog_) {
     CloseDialog(false, base::string16(), DismissalCause::CANCEL_DIALOGS_CALLED);
   }
 
   // Cancel any app-modal dialogs being run by the app-modal dialog system.
-  return AppModalDialogManager()->CancelDialogs(
-      web_contents, suppress_callbacks, reset_state);
+  return AppModalDialogManager()->CancelDialogs(web_contents, reset_state);
 }
 
 void JavaScriptDialogTabHelper::WasHidden() {
   if (dialog_)
     CloseDialog(false, base::string16(), DismissalCause::TAB_HIDDEN);
 }
 
 // This function handles the case where browser-side navigation (PlzNavigate) is
 // enabled. DidStartNavigationToPendingEntry, below, handles the case where
 // PlzNavigate is not enabled. TODO(avi): When the non-PlzNavigate code is
@@ skipping 66 matching lines @@
   dialog_callback_.Run(success, user_input);
 
   ClearDialogInfo();
 }
 
 void JavaScriptDialogTabHelper::ClearDialogInfo() {
   dialog_.reset();
   dialog_callback_.Reset();
   BrowserList::RemoveObserver(this);
 }