Allow MimeHandlerViewGuest be embedded inside OOPIFs

content/public/browser/browser_plugin_guest_delegate.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/browser/browser_plugin_guest_delegate.h"
 
 namespace content {
 
 bool BrowserPluginGuestDelegate::CanRunInDetachedState() const {
   return false;
@@ skipping 18 matching lines @@
 
 bool BrowserPluginGuestDelegate::HandleStopFindingForEmbedder(
     StopFindAction action) {
   return false;
 }
 
 bool BrowserPluginGuestDelegate::CanUseCrossProcessFrames() {
   return true;
 }
 
+RenderFrameHost* BrowserPluginGuestDelegate::GetOwnerFrame() {
+  return nullptr;
+}
+
+bool BrowserPluginGuestDelegate::CanBeEmbeddedInsideCrossProcessFrames() {
+  return false;
+}
+
 }  // namespace content