Implement logging of the Credential Manager API calls to chrome://password-manager-internals.

components/password_manager/core/browser/credential_manager_logger.h

Index: components/password_manager/core/browser/credential_manager_logger.h
diff --git a/components/password_manager/core/browser/credential_manager_logger.h b/components/password_manager/core/browser/credential_manager_logger.h
new file mode 100644
index 0000000000000000000000000000000000000000..c99f7f692a38e64bdc0327c6237e92a589ffb6c4
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+++ b/components/password_manager/core/browser/credential_manager_logger.h
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+// 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 COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_CREDENTIAL_MANAGER_LOGGER_H_
+#define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_CREDENTIAL_MANAGER_LOGGER_H_
+
+#include <vector>
+
+#include "base/macros.h"
+#include "components/password_manager/core/common/credential_manager_types.h"
+#include "url/gurl.h"
+
+namespace password_manager {
+
+class LogManager;
+
+// A helper for logging Credential Manager API calls to
+// chrome://password-manager-internals.
+class CredentialManagerLogger {
+ public:
+  explicit CredentialManagerLogger(const LogManager*);
+  ~CredentialManagerLogger();
+
+  void LogRequestCredential(const GURL& url,
+                            bool zero_click_only,
+                            const std::vector<GURL>& federations);
+  void LogSendCredential(const GURL& url, CredentialType type);
+  void LogStoreCredential(const GURL& url, CredentialType type);
+  void LogRequireUserMediation(const GURL& url);
+
+ private:
+  // The LogManager to which logs can be sent for display.
+  const LogManager* const log_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(CredentialManagerLogger);
+};
+
+}  // namespace password_manager
+
+#endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_CREDENTIAL_MANAGER_LOGGER_H_