Make extensions use a correct same-origin check.

extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.cc

Index: extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.cc
diff --git a/extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.cc b/extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.cc
index 52f3e7e6b95a92e65f7f297f4f5507dcdef96c20..d2f5d50518ad955ee87d6ca7c520f2ce395e37df 100644
--- a/extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.cc
+++ b/extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.cc
@@ -11,6 +11,7 @@
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/extension.h"
 #include "ui/gfx/native_widget_types.h"
+#include "url/origin.h"
 
 namespace javascript_dialog_extensions_client {
 namespace {
@@ -62,8 +63,8 @@ class JavaScriptDialogExtensionsClientImpl
                         const GURL& origin_url,
                         std::string* name_out) override {
     const Extension* extension = GetExtensionForWebContents(web_contents);
-    if (extension &&
-        web_contents->GetLastCommittedURL().GetOrigin() == origin_url) {
+    if (extension && url::IsSameOriginWith(
+                         origin_url, web_contents->GetLastCommittedURL())) {
       *name_out = extension->name();
       return true;
     }