[GCM] Reset store on checkin rejection and add checkin state to internals

google_apis/gcm/engine/checkin_request.h

 // Copyright 2014 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 GOOGLE_APIS_GCM_ENGINE_CHECKIN_REQUEST_H_
 #define GOOGLE_APIS_GCM_ENGINE_CHECKIN_REQUEST_H_
 
 #include <stdint.h>
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "google_apis/gcm/base/gcm_export.h"
 #include "google_apis/gcm/protocol/android_checkin.pb.h"
 #include "google_apis/gcm/protocol/checkin.pb.h"
 #include "net/base/backoff_entry.h"
+#include "net/http/http_status_code.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "url/gurl.h"
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 namespace gcm {
 
 class GCMStatsRecorder;
 
 // Enables making check-in requests with the GCM infrastructure. When called
 // with android_id and security_token both set to 0 it is an initial check-in
 // used to obtain credentials. These should be persisted and used for subsequent
 // check-ins.
 class GCM_EXPORT CheckinRequest : public net::URLFetcherDelegate {
  public:
   // A callback function for the checkin request, accepting |checkin_response|
   // protobuf.
-  typedef base::Callback<void(const checkin_proto::AndroidCheckinResponse&
-                                  checkin_response)> CheckinRequestCallback;
+  typedef base::Callback<void(
+      net::HttpStatusCode response_code,
+      const checkin_proto::AndroidCheckinResponse& checkin_response)>
+      CheckinRequestCallback;
 
   // Checkin request details.
   struct GCM_EXPORT RequestInfo {
     RequestInfo(uint64_t android_id,
                 uint64_t security_token,
                 const std::map<std::string, std::string>& account_tokens,
                 const std::string& settings_digest,
                 const checkin_proto::ChromeBuildProto& chrome_build_proto);
     RequestInfo(const RequestInfo& other);
     ~RequestInfo();
@@ skipping 40 matching lines @@
   GCMStatsRecorder* recorder_;
 
   base::WeakPtrFactory<CheckinRequest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CheckinRequest);
 };
 
 }  // namespace gcm
 
 #endif  // GOOGLE_APIS_GCM_ENGINE_CHECKIN_REQUEST_H_