Plumb document's strict mixed content checking for RemoteFrames

content/browser/frame_host/render_frame_host_manager.cc

Index: content/browser/frame_host/render_frame_host_manager.cc
diff --git a/content/browser/frame_host/render_frame_host_manager.cc b/content/browser/frame_host/render_frame_host_manager.cc
index 96d6c1f6d836ff6dc84fe017d5e220c0403fd812..00fb8e9483e1a82bcb6c5b2c2e223cb82d6bd656 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -1184,6 +1184,18 @@ void RenderFrameHostManager::OnDidUpdateName(const std::string& name) {
   }
 }
 
+void RenderFrameHostManager::OnDidUpdateShouldEnforceStrictMixedContentChecking(
+    bool should_enforce) {
+  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())
+    return;
+
+  for (const auto& pair : *proxy_hosts_) {
+    pair.second->Send(
+        new FrameMsg_DidUpdateShouldEnforceStrictMixedContentChecking(
+            pair.second->GetRoutingID(), should_enforce));
+  }
+}
+
 void RenderFrameHostManager::OnDidUpdateOrigin(const url::Origin& origin) {
   if (!SiteIsolationPolicy::IsSwappedOutStateForbidden())
     return;