[Extensions] DCHECK that ExtensionFunctions respond (and only once)

extensions/browser/api/guest_view/app_view/app_view_guest_internal_api.h

Index: extensions/browser/api/guest_view/app_view/app_view_guest_internal_api.h
diff --git a/extensions/browser/api/guest_view/app_view/app_view_guest_internal_api.h b/extensions/browser/api/guest_view/app_view/app_view_guest_internal_api.h
index e9e252bb2d9e9cd6055f1094f9c8e11d7073e42f..0bcb7d85cf57f70666817e4d871342a8ff386b68 100644
--- a/extensions/browser/api/guest_view/app_view/app_view_guest_internal_api.h
+++ b/extensions/browser/api/guest_view/app_view/app_view_guest_internal_api.h
@@ -10,7 +10,8 @@
 
 namespace extensions {
 
-class AppViewGuestInternalAttachFrameFunction : public AsyncExtensionFunction {
+class AppViewGuestInternalAttachFrameFunction
+    : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("appViewGuestInternal.attachFrame",
                              APPVIEWINTERNAL_ATTACHFRAME);
@@ -18,13 +19,14 @@ class AppViewGuestInternalAttachFrameFunction : public AsyncExtensionFunction {
 
  protected:
   ~AppViewGuestInternalAttachFrameFunction() override {}
-  bool RunAsync() final;
+  ResponseAction Run() final;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppViewGuestInternalAttachFrameFunction);
 };
 
-class AppViewGuestInternalDenyRequestFunction : public AsyncExtensionFunction {
+class AppViewGuestInternalDenyRequestFunction
+    : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("appViewGuestInternal.denyRequest",
                              APPVIEWINTERNAL_DENYREQUEST);
@@ -32,7 +34,7 @@ class AppViewGuestInternalDenyRequestFunction : public AsyncExtensionFunction {
 
  protected:
   ~AppViewGuestInternalDenyRequestFunction() override {}
-  bool RunAsync() final;
+  ResponseAction Run() final;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppViewGuestInternalDenyRequestFunction);