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 58c17d54c34798e0e070878e4e572a594f41a3a3..845cd2e9e2bc3d4e8c7b1c53c211fed92644f744 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -937,6 +937,27 @@ 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())