Prevent excessive beeping in case of Find On Page search failure

chrome/browser/ui/find_bar/find_tab_helper.h

Index: chrome/browser/ui/find_bar/find_tab_helper.h
diff --git a/chrome/browser/ui/find_bar/find_tab_helper.h b/chrome/browser/ui/find_bar/find_tab_helper.h
index 2f3f05bc5052974ea7e15a4d0ce8ca23edfedd10..37b60ce1b38987bdbf934468b8594f69c29b696e 100644
--- a/chrome/browser/ui/find_bar/find_tab_helper.h
+++ b/chrome/browser/ui/find_bar/find_tab_helper.h
@@ -20,8 +20,8 @@ class FindTabHelper : public content::WebContentsObserver,
   ~FindTabHelper() override;
 
   // Starts the Find operation by calling StartFinding on the Tab. This function
-  // can be called from the outside as a result of hot-keys, so it uses the
-  // last remembered search string as specified with set_find_string(). This
+  // can be called from the outside as a result of hot-keys, so if
+  // |search_string| is null, it finds the last remembered search string. This
   // function does not block while a search is in progress. The controller will
   // receive the results through the notification mechanism. See Observe(...)
   // for details.
@@ -112,6 +112,10 @@ class FindTabHelper : public content::WebContentsObserver,
   // current session, which also uniquely identifies the session.
   int current_find_session_id_;
 
+  // True if HandleFindReply has received a |final_update| notification for the
+  // current request.
+  bool final_update_received_for_current_query_;
+
   // The current string we are/just finished searching for. This is used to
   // figure out if this is a Find or a FindNext operation (FindNext should not
   // increase the request id).