Implement ContentSecurityPolicy on the browser-side.

content/common/content_security_policy/content_security_policy.h

Index: content/common/content_security_policy/content_security_policy.h
diff --git a/content/common/content_security_policy/content_security_policy.h b/content/common/content_security_policy/content_security_policy.h
new file mode 100644
index 0000000000000000000000000000000000000000..56454ed27b65104e3a7b7516b3e50699e54629af
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+++ b/content/common/content_security_policy/content_security_policy.h
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+// 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_COMMON_CONTENT_SECURITY_POLICY_CONTENT_SECURITY_POLICY_H_
+#define CONTENT_COMMON_CONTENT_SECURITY_POLICY_CONTENT_SECURITY_POLICY_H_
+
+#include <memory>
+#include <vector>
+
+#include "content/common/content_export.h"
+#include "content/common/content_security_policy/csp_directive.h"
+#include "content/common/content_security_policy_header.h"
+#include "url/gurl.h"
+
+namespace content {
+
+class CSPContext;
+
+// https://www.w3.org/TR/CSP3/#framework-policy
+//
+// A ContentSecurityPolicy is a collection of CSPDirectives which will be
+// enforced upon requests.
+struct CONTENT_EXPORT ContentSecurityPolicy {
+  ContentSecurityPolicy();
+  ContentSecurityPolicy(blink::WebContentSecurityPolicyType disposition,
+                        blink::WebContentSecurityPolicySource source,
+                        const std::vector<CSPDirective>& directives,
+                        const std::vector<std::string>& report_endpoints,
+                        const std::string& header);
+  ContentSecurityPolicy(const ContentSecurityPolicy&);
+  ~ContentSecurityPolicy();
+
+  blink::WebContentSecurityPolicyType disposition;
+  blink::WebContentSecurityPolicySource source;
+  std::vector<CSPDirective> directives;
+  std::vector<std::string> report_endpoints;
+  std::string header;
+
+  std::string ToString() const;
+
+  // Return true when the |policy| allows a request to the |url| in relation to
+  // the |directive| for a given |context|.
+  // Note: Any policy violation are reported to the |context|.
+  static bool Allow(const ContentSecurityPolicy& policy,
+                    CSPDirective::Name directive,
+                    const GURL& url,
+                    CSPContext* context,
+                    bool is_redirect = false);
+};
+
+}  // namespace content
+#endif  // CONTENT_COMMON_CONTENT_SECURITY_POLICY_CONTENT_SECURITY_POLICY_H_