Add permission reporter skeleton

chrome/browser/safe_browsing/permission_reporter.h

+// Copyright 2016 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 CHROME_BROWSER_SAFE_BROWSING_PERMISSION_REPORTER_H_
+#define CHROME_BROWSER_SAFE_BROWSING_PERMISSION_REPORTER_H_
+
+#include <string>
+
+#include "chrome/browser/permissions/permission_uma_util.h"
+#include "url/gurl.h"
+
+namespace net {
+class URLRequestContext;
+}  // namespace net
+
+namespace safe_browsing {
+
+// Provides functionality for building and serializing reports about permissions
+// to a report collection server.
+class PermissionReporter {
+ public:
+  // Creates a permission reporter that will send permission reports to
+  // the SafeBrowsing permission action server, using |request_context| as the
+  // context for the reports.
+  explicit PermissionReporter(net::URLRequestContext* request_context);
+
+  ~PermissionReporter();
+
+  // Sends a serialized permission report to the report collection server.
+  // The permission report includes |origin| as the origin of
+  // the site requesting permission, |permission| as the type of permission
+  // requested, and |action| as the action taken. The report will be serialized
+  // using protobuf defined in
+  // //src/chrome/common/safe_browsing/permission_report.proto
+  void SendReport(const GURL& origin,
+                  content::PermissionType permission,
+                  PermissionAction action);
+
+  // Builds and serializes a permission report with |origin| as the origin of
+  // the site requesting permission, |permission| as the type of permission
+  // requested, and |action| as the action taken. The serialized report is
+  // written into |output|. Returns true if the serialization was successful and
+  // false otherwise.
+  static bool BuildReport(const GURL& origin,
+                          content::PermissionType permission,
+                          PermissionAction action,
+                          std::string* output);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(PermissionReporter);
+};
+
+}  // namespace safe_browsing
+
+#endif  // CHROME_BROWSER_SAFE_BROWSING_PERMISSION_REPORTER_H_