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

content/browser/frame_host/csp_context_impl.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_FRAME_HOST_CSP_CONTEXT_IMPL_H_
+#define CONTENT_BROWSER_FRAME_HOST_CSP_CONTEXT_IMPL_H_
+
+#include "content/common/content_security_policy/csp_context.h"
+
+namespace content {
+
+class FrameTreeNode;
+
+class CSPContextImpl : public CSPContext {
+ public:
+  CSPContextImpl(FrameTreeNode* frame_tree_node);
+  void LogToConsole(const std::string& message) override;
+
+  // Inform the renderer process that a navigation has been blocked by a content
+  // security policy.
+  void ReportViolation(const CSPViolationParams& violation_params) override;
+
+ private:
+  bool SchemeShouldBypassCSP(const base::StringPiece& scheme) override;
+
+  // Never nullptr;
+  FrameTreeNode* frame_tree_node_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_FRAME_HOST_CSP_CONTEXT_IMPL_H_ */