CSP: group policies in didAddContentSecurityPolicy.

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index db810a9abfecbdec80719951b70f6b43169cbd81..b61d8815aea7f33be509f1513470881cbe42dc0b 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -725,13 +725,10 @@ class CONTENT_EXPORT RenderFrameHostImpl
   void OnDidSetFeaturePolicyHeader(
       const ParsedFeaturePolicyHeader& parsed_header);
 
-  // A CSP |header| has been added.
-  // RFC2616, section 4.2 specifies that headers appearing multiple times can be
-  // combined with a comma. Hence zero, one or several |policies| are added to
-  // the document.
-  void OnDidAddContentSecurityPolicy(
-      const ContentSecurityPolicyHeader& header,
-      const std::vector<ContentSecurityPolicy>& policies);
+  // A CSP |header| has been added. This results in a new |policy| added to the
+  // document.
+  void OnDidAddContentSecurityPolicy(const ContentSecurityPolicyHeader& header,
+                                     const ContentSecurityPolicy& policy);
 
   void OnEnforceInsecureRequestPolicy(blink::WebInsecureRequestPolicy policy);
   void OnUpdateToUniqueOrigin(bool is_potentially_trustworthy_unique_origin);