Prevent excessive beeping in case of Find On Page search failure

chrome/browser/ui/find_bar/find_tab_helper.cc

Index: chrome/browser/ui/find_bar/find_tab_helper.cc
diff --git a/chrome/browser/ui/find_bar/find_tab_helper.cc b/chrome/browser/ui/find_bar/find_tab_helper.cc
index 4f089762b2bd65707484cf40bdfe44f32019080d..f9da77669a7024d545e30ef31a7de5c31903c7c7 100644
--- a/chrome/browser/ui/find_bar/find_tab_helper.cc
+++ b/chrome/browser/ui/find_bar/find_tab_helper.cc
@@ -35,8 +35,8 @@ FindTabHelper::FindTabHelper(WebContents* web_contents)
       current_find_request_id_(find_request_id_counter_++),
       current_find_session_id_(current_find_request_id_),
       last_search_case_sensitive_(false),
-      last_search_result_() {
-}
+      last_search_result_(),
+      final_update_received_for_current_query_(false) {}
 
 FindTabHelper::~FindTabHelper() {
 }
@@ -88,6 +88,7 @@ void FindTabHelper::StartFinding(base::string16 search_string,
   last_search_case_sensitive_ = case_sensitive;
 
   find_op_aborted_ = false;
+  final_update_received_for_current_query_ = false;
 
   // Keep track of what the last search was across the tabs.
   Profile* profile =
@@ -174,6 +175,15 @@ void FindTabHelper::HandleFindReply(int request_id,
     else if (selection_rect.IsEmpty())
       selection = last_search_result_.selection_rect();
 
+    // Don't report more than one "final update" for a given query. See
+    // https://crbug.com/682299.
+    if (final_update) {
+      if (final_update_received_for_current_query_)
+        final_update = false;
+      else
+        final_update_received_for_current_query_ = true;
+    }
+
     // Notify the UI, automation and any other observers that a find result was
     // found.
     last_search_result_ = FindNotificationDetails(