CSP: group policies in didAddContentSecurityPolicy.

content/browser/frame_host/frame_tree_node.cc

Index: content/browser/frame_host/frame_tree_node.cc
diff --git a/content/browser/frame_host/frame_tree_node.cc b/content/browser/frame_host/frame_tree_node.cc
index ee394a607ab5e7cadf5abfc96f44a58bddddd9d9..d5ab7854f68f1a6fd199910853a3d6359e821b73 100644
--- a/content/browser/frame_host/frame_tree_node.cc
+++ b/content/browser/frame_host/frame_tree_node.cc
@@ -290,10 +290,12 @@ void FrameTreeNode::ResetFeaturePolicyHeader() {
   replication_state_.feature_policy_header.clear();
 }
 
-void FrameTreeNode::AddContentSecurityPolicy(
-    const ContentSecurityPolicyHeader& header) {
-  replication_state_.accumulated_csp_headers.push_back(header);
-  render_manager_.OnDidAddContentSecurityPolicy(header);
+void FrameTreeNode::AddContentSecurityPolicies(
+    const std::vector<ContentSecurityPolicyHeader>& headers) {
+  replication_state_.accumulated_csp_headers.insert(
+      replication_state_.accumulated_csp_headers.end(), headers.begin(),
+      headers.end());
+  render_manager_.OnDidAddContentSecurityPolicies(headers);
 }
 
 void FrameTreeNode::ResetCspHeaders() {