Test FindBar audible alerts.

chrome/browser/ui/find_bar/find_bar.h

Index: chrome/browser/ui/find_bar/find_bar.h
diff --git a/chrome/browser/ui/find_bar/find_bar.h b/chrome/browser/ui/find_bar/find_bar.h
index 9bda180cb987f78f2dfb0d099968bd41a3f42a51..349f79621dfc176581e388eb92c1ddb556f75a2c 100644
--- a/chrome/browser/ui/find_bar/find_bar.h
+++ b/chrome/browser/ui/find_bar/find_bar.h
@@ -111,6 +111,9 @@ class FindBarTesting {
 
   // Gets the pixel width of the FindBar.
   virtual int GetWidth() = 0;
+
+  // Gets the number of audible alerts that have been issued by this bar.
+  virtual size_t GetAudibleAlertCount() = 0;
 };
 
 #endif  // CHROME_BROWSER_UI_FIND_BAR_FIND_BAR_H_