Clean up unneeded JavaScript dialog parameter.

content/public/browser/javascript_dialog_manager.h

Index: content/public/browser/javascript_dialog_manager.h
diff --git a/content/public/browser/javascript_dialog_manager.h b/content/public/browser/javascript_dialog_manager.h
index fb1fbd1e4da24fd9dd025f85575dc39c891d3003..3598feed952d44fc1d812e290405415be876eb47 100644
--- a/content/public/browser/javascript_dialog_manager.h
+++ b/content/public/browser/javascript_dialog_manager.h
@@ -51,11 +51,8 @@ class CONTENT_EXPORT JavaScriptDialogManager {
                                       const base::string16* prompt_override);
 
   // Cancels all active and pending dialogs for the given WebContents. If
-  // |suppress_callbacks| is true, suppresses the calls to callbacks while
-  // canceling those dialogs. If |reset_state| is true, resets any saved state
-  // tied to |web_contents|.
+  // |reset_state| is true, resets any saved state tied to |web_contents|.
   virtual void CancelDialogs(WebContents* web_contents,
-                             bool suppress_callbacks,
                              bool reset_state) = 0;
 
   virtual ~JavaScriptDialogManager() {}