Replicate Content-Security-Policy into remote frame proxies.

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 2b8794e052f62f6ae570f704ad6d84722e3bf149..36b1c96753930953146801fa6ee18bb316dc297e 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -935,6 +935,27 @@ void RenderFrameHostManager::OnDidUpdateName(const std::string& name,
   }
 }
 
+void RenderFrameHostManager::OnDidAddContentSecurityPolicy(
+    const ContentSecurityPolicyHeader& header) {
+  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())
+    return;
+
+  for (const auto& pair : proxy_hosts_) {
+    pair.second->Send(new FrameMsg_AddContentSecurityPolicy(
+        pair.second->GetRoutingID(), header));
+  }
+}
+
+void RenderFrameHostManager::OnDidResetContentSecurityPolicy() {
+  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())
+    return;
+
+  for (const auto& pair : proxy_hosts_) {
+    pair.second->Send(
+        new FrameMsg_ResetContentSecurityPolicy(pair.second->GetRoutingID()));
+  }
+}
+
 void RenderFrameHostManager::OnEnforceStrictMixedContentChecking(
     bool should_enforce) {
   if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())