Update Linux to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/ui/webui/options/certificate_manager_handler.cc

Index: chrome/browser/ui/webui/options/certificate_manager_handler.cc
diff --git a/chrome/browser/ui/webui/options/certificate_manager_handler.cc b/chrome/browser/ui/webui/options/certificate_manager_handler.cc
index 6a97f8444c9acd05c8a9aa8ab79bf76cff50d25b..f77cc8b3200c597e4038a7e50c485958a3c4f7fe 100644
--- a/chrome/browser/ui/webui/options/certificate_manager_handler.cc
+++ b/chrome/browser/ui/webui/options/certificate_manager_handler.cc
@@ -114,8 +114,8 @@ std::string NetErrorToString(int net_error) {
 // Struct to bind the Equals member function to an object for use in find_if.
 struct CertEquals {
   explicit CertEquals(const net::X509Certificate* cert) : cert_(cert) {}
-  bool operator()(const net::X509Certificate* cert) const {
-    return cert_->Equals(cert);
+  bool operator()(const scoped_refptr<net::X509Certificate> cert) const {
+    return cert_->Equals(cert.get());
   }
   const net::X509Certificate* cert_;
 };