Revert of PlzNavigate: Enforce 'frame-src' CSP on the browser.

content/browser/frame_host/frame_tree_node.h

Index: content/browser/frame_host/frame_tree_node.h
diff --git a/content/browser/frame_host/frame_tree_node.h b/content/browser/frame_host/frame_tree_node.h
index f48f00c49e9b38424bce679210c51eb282b00086..7368c7f4a8611b23f72650560f58bb3dde748569 100644
--- a/content/browser/frame_host/frame_tree_node.h
+++ b/content/browser/frame_host/frame_tree_node.h
@@ -17,6 +17,7 @@
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/frame_host/render_frame_host_manager.h"
 #include "content/common/content_export.h"
+#include "content/common/content_security_policy/content_security_policy.h"
 #include "content/common/frame_owner_properties.h"
 #include "content/common/frame_replication_state.h"
 #include "third_party/WebKit/public/platform/WebInsecureRequestPolicy.h"
@@ -169,12 +170,14 @@
 
   // Add CSP header to replication state, notify proxies about the update and
   // enforce it on the browser.
-  void AddContentSecurityPolicy(const ContentSecurityPolicyHeader& header);
+  void AddContentSecurityPolicy(
+      const ContentSecurityPolicyHeader& header,
+      const std::vector<ContentSecurityPolicy>& policies);
 
   // Discards previous CSP headers and notifies proxies about the update.
   // Typically invoked after committing navigation to a new document (since the
   // new document comes with a fresh set of CSP http headers).
-  void ResetCspHeaders();
+  void ResetContentSecurityPolicy();
 
   // Sets the current insecure request policy, and notifies proxies about the
   // update.
@@ -401,6 +404,9 @@
   // to the core logic of FrameTreeNode.
   FrameTreeNodeBlameContext blame_context_;
 
+  // A set of Content-Security-Policies to enforce on the browser-side.
+  std::vector<ContentSecurityPolicy> csp_policies_;
+
   DISALLOW_COPY_AND_ASSIGN(FrameTreeNode);
 };