Added virtual destructor to ResourceRequestAllowedNotifier::Observer.

Bug: 728776
Change-Id: Id135e60fb228a664fe456d74ce1b60752d6eb7dc
Reviewed-on: https://chromium-review.googlesource.com/682015Reviewed-by: David Roger <droger@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#504393}

chrome/browser/translate/translate_service.h

@@ -45,7 +45,7 @@ class TranslateService
 
  private:
   TranslateService();
-  ~TranslateService();
+  ~TranslateService() override;
 
   // ResourceRequestAllowedNotifier::Observer methods.
   void OnResourceRequestsAllowed() override;

components/web_resource/resource_request_allowed_notifier.h

@@ -43,6 +43,7 @@ class ResourceRequestAllowedNotifier
   class Observer {
    public:
     virtual void OnResourceRequestsAllowed() = 0;
+    virtual ~Observer() = default;
   };
 
   // Specifies the resource request allowed state.

ios/chrome/browser/translate/translate_service_ios.h

@@ -25,7 +25,7 @@ class TranslateServiceIOS
 
  private:
   TranslateServiceIOS();
-  ~TranslateServiceIOS();
+  ~TranslateServiceIOS() override;
 
   // ResourceRequestAllowedNotifier::Observer methods.
   void OnResourceRequestsAllowed() override;

ios/web_view/internal/translate/web_view_translate_service.h

@@ -38,7 +38,7 @@ class WebViewTranslateService {
       : public web_resource::ResourceRequestAllowedNotifier::Observer {
    public:
     TranslateRequestsAllowedListener();
-    ~TranslateRequestsAllowedListener();
+    ~TranslateRequestsAllowedListener() override;
 
     // ResourceRequestAllowedNotifier::Observer methods.
     void OnResourceRequestsAllowed() override;