Expand SecurityStyleChanged interfaces to include explanations

content/public/browser/security_style_explanation.h

Index: content/public/browser/security_style_explanation.h
diff --git a/content/public/browser/security_style_explanation.h b/content/public/browser/security_style_explanation.h
new file mode 100644
index 0000000000000000000000000000000000000000..5a0d8660b991427eee4f1f53667aa51efab92210
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+++ b/content/public/browser/security_style_explanation.h
@@ -0,0 +1,32 @@
+// Copyright 2015 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_PUBLIC_BROWSER_SECURITY_STYLE_EXPLANATION_H_
+#define CONTENT_PUBLIC_BROWSER_SECURITY_STYLE_EXPLANATION_H_
+
+#include <string>
+
+#include "content/common/content_export.h"
+
+namespace content {
+
+// A human-readable summary phrase and more detailed description of a
+// security property that was used to compute the SecurityStyle of a
+// resource. An example summary phrase would be "Expired Certificate",
+// with a description along the lines of "This site's certificate chain
+// contains errors (net::CERT_DATE_INVALID)".
+struct SecurityStyleExplanation {
+  CONTENT_EXPORT SecurityStyleExplanation(){};
+  CONTENT_EXPORT SecurityStyleExplanation(const std::string& summary,
+                                          const std::string& description)
+      : summary(summary), description(description) {}
+  CONTENT_EXPORT ~SecurityStyleExplanation() {}
+
+  std::string summary;
+  std::string description;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_BROWSER_SECURITY_STYLE_EXPLANATION_H_