Remove unnecessary 'virtual' annotation from mojo

mojo/services/html_viewer/webcookiejar_impl.h

Index: mojo/services/html_viewer/webcookiejar_impl.h
diff --git a/mojo/services/html_viewer/webcookiejar_impl.h b/mojo/services/html_viewer/webcookiejar_impl.h
index fdda17286e8a898c833cdbcfcb02784880a6f6f8..ac53e21e0862147c19dc8c0127bd4ccac1e7cea8 100644
--- a/mojo/services/html_viewer/webcookiejar_impl.h
+++ b/mojo/services/html_viewer/webcookiejar_impl.h
@@ -16,16 +16,15 @@ class WebCookieJarImpl : public blink::WebCookieJar {
   virtual ~WebCookieJarImpl();
 
   // blink::WebCookieJar methods:
-  virtual void setCookie(
+  void setCookie(const blink::WebURL& url,
+                 const blink::WebURL& first_party_for_cookies,
+                 const blink::WebString& cookie) override;
+  blink::WebString cookies(
       const blink::WebURL& url,
-      const blink::WebURL& first_party_for_cookies,
-      const blink::WebString& cookie);
-  virtual blink::WebString cookies(
+      const blink::WebURL& first_party_for_cookies) override;
+  blink::WebString cookieRequestHeaderFieldValue(
       const blink::WebURL& url,
-      const blink::WebURL& first_party_for_cookies);
-  virtual blink::WebString cookieRequestHeaderFieldValue(
-      const blink::WebURL& url,
-      const blink::WebURL& first_party_for_cookies);
+      const blink::WebURL& first_party_for_cookies) override;
 
  private:
   mojo::CookieStorePtr store_;