[iOS] Remove BrowserState names in BrowserStateInfoCache

ios/chrome/browser/browser_state/browser_state_info_cache_observer.h

Index: ios/chrome/browser/browser_state/browser_state_info_cache_observer.h
diff --git a/ios/chrome/browser/browser_state/browser_state_info_cache_observer.h b/ios/chrome/browser/browser_state/browser_state_info_cache_observer.h
index 9a77b8587c4166db88b17201338170d6f756f755..2d8d91c0b2737cf5a2e185b4e361387c14f6f9be 100644
--- a/ios/chrome/browser/browser_state/browser_state_info_cache_observer.h
+++ b/ios/chrome/browser/browser_state/browser_state_info_cache_observer.h
@@ -22,8 +22,7 @@ class BrowserStateInfoCacheObserver {
   virtual void OnBrowserStateAdded(const base::FilePath& path) = 0;
 
   // Called when a BrowserState has been removed.
-  virtual void OnBrowserStateWasRemoved(const base::FilePath& path,
-                                        const base::string16& name) = 0;
+  virtual void OnBrowserStateWasRemoved(const base::FilePath& path) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserStateInfoCacheObserver);