Create PasswordProtectionRequest to handle password pings

components/safe_browsing/password_protection/password_protection_request.h

Index: components/safe_browsing/password_protection/password_protection_request.h
diff --git a/components/safe_browsing/password_protection/password_protection_request.h b/components/safe_browsing/password_protection/password_protection_request.h
new file mode 100644
index 0000000000000000000000000000000000000000..0851729e8663f5aacf448021d93c461b978f7150
--- /dev/null
+++ b/components/safe_browsing/password_protection/password_protection_request.h
@@ -0,0 +1,93 @@
+// 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 COMPONENTS_SAFE_BROWSING_PASSWORD_PROTECTION_PASSWORD_PROTECTION_REQUEST_H_
+#define COMPONENTS_SAFE_BROWSING_PASSWORD_PROTECTION_PASSWORD_PROTECTION_REQUEST_H_
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "components/safe_browsing/password_protection/password_protection_service.h"
+#include "net/url_request/url_fetcher.h"
+#include "net/url_request/url_fetcher_delegate.h"
+#include "net/url_request/url_request_status.h"
+
+class GURL;
+
+namespace safe_browsing {
+
+class PasswordProtectionRequest : public net::URLFetcherDelegate {
+ public:
+  // The outcome of the request. These values are used for UMA.

[Nathan Parker, 2017/03/23 20:45:50]

I'd attach values to each of these, so you can compare them to histograms.xml
values.

[Jialiu Lin, 2017/03/23 22:43:01]

Agree. Done.

+  // DO NOT CHANGE THE ORDERING OF THESE VALUES.
+  enum RequestOutcome {
+    UNKOWN,

[Nathan Parker, 2017/03/23 20:45:50]

UNKNOWN

[Jialiu Lin, 2017/03/23 22:43:00]

er..... second time... Fixed.

+    SUCCEEDED,
+    CANCELED,
+    TIMEDOUT,
+    MATCHED_WHITELIST,
+    RESPONSE_ALREADY_CACHED,
+    NO_EXTENDED_REPORTING,
+    INCOGNITO,
+    REQUEST_MALFORMED,
+    FETCH_FAILED,
+    RESPONSE_MALFORMED,
+    SERVICE_DESTROYED,
+    MAX_OUTCOME
+  };
+
+  PasswordProtectionRequest(const GURL& main_frame_url,
+                            LoginReputationClientRequest::TriggerType type,
+                            bool is_extended_reporting,
+                            bool is_incognito,
+                            base::WeakPtr<PasswordProtectionService> pps,
+                            int request_timeout_in_ms);
+
+  ~PasswordProtectionRequest() override;
+
+  base::WeakPtr<PasswordProtectionRequest> GetWeakPtr() {
+    return weakptr_factory_.GetWeakPtr();
+  }
+

[Nathan Parker, 2017/03/23 20:45:50]

Some comments on these functions would be useful here.  Does this send the
request? And does cancel call Finish?

[Jialiu Lin, 2017/03/23 22:43:00]

Done.

+  void Start();
+
+  void Cancel(bool timed_out);
+
+  // Start a timeout to cancel the request if it takes too long.
+  void StartTimeout();
+
+  void Finish(RequestOutcome outcome,
+              std::unique_ptr<LoginReputationClientResponse> response);
+
+  void CheckWhitelistsOnUIThread();
+
+  void OnWhitelistCheckDone(bool match_whitelist);
+
+  void CheckCachedVerdicts();
+
+  GURL main_frame_url() const { return main_frame_url_; }

[Nathan Parker, 2017/03/23 20:45:50]

Could any of these be private?

[Jialiu Lin, 2017/03/23 22:43:00]

Yes, moved a bunch of them into private.

+
+  bool is_incognito() const { return is_incognito_; }
+
+  // net::URLFetcherDelegate override.
+  void OnURLFetchComplete(const net::URLFetcher* source) override;
+
+ private:
+  void SendRequest();
+
+  GURL main_frame_url_;
+  LoginReputationClientRequest::TriggerType request_type_;
+  bool is_extended_reporting_;
+  bool is_incognito_;
+  base::TimeTicks request_start_time_;
+  base::TimeTicks timeout_start_time_;
+  std::unique_ptr<net::URLFetcher> fetcher_;
+  base::WeakPtr<PasswordProtectionService> password_protection_service_;
+  int request_timeout_in_ms_;
+  base::WeakPtrFactory<PasswordProtectionRequest> weakptr_factory_;
+  DISALLOW_COPY_AND_ASSIGN(PasswordProtectionRequest);
+};
+
+}  // namespace safe_browsing
+
+#endif  // COMPONENTS_SAFE_BROWSING_PASSWORD_PROTECTION_PASSWORD_PROTECTION_REQUEST_H_