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

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 8bc73019f0b8317a3ba51dd915308c45b957c0f6..42c23f05a592b38a82dfcf1b3556c5e3aed9e07e 100644
--- a/content/browser/frame_host/frame_tree_node.cc
+++ b/content/browser/frame_host/frame_tree_node.cc
@@ -13,6 +13,7 @@
 #include "base/metrics/histogram_macros.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/stl_util.h"
+#include "content/browser/frame_host/csp_context_impl.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/navigation_request.h"
 #include "content/browser/frame_host/navigator.h"
@@ -117,7 +118,8 @@ FrameTreeNode::FrameTreeNode(FrameTree* frame_tree,
       pending_sandbox_flags_(blink::WebSandboxFlags::None),
       frame_owner_properties_(frame_owner_properties),
       loading_progress_(kLoadingProgressNotStarted),
-      blame_context_(frame_tree_node_id_, parent) {
+      blame_context_(frame_tree_node_id_, parent),
+      csp_context_(new CSPContextImpl(this)) {
   std::pair<FrameTreeNodeIdMap::iterator, bool> result =
       g_frame_tree_node_id_map.Get().insert(
           std::make_pair(frame_tree_node_id_, this));
@@ -257,6 +259,7 @@ void FrameTreeNode::SetCurrentOrigin(
   replication_state_.origin = origin;
   replication_state_.has_potentially_trustworthy_unique_origin =
       is_potentially_trustworthy_unique_origin;
+  csp_context_->SetSelf(replication_state_.origin);
 }
 
 void FrameTreeNode::SetFrameName(const std::string& name,