[GCM] Adding basic G-services handling

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 <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/weak_ptr.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/url_request/url_fetcher_delegate.h"
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 namespace gcm {
 
 // 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 |android_id| and
-  // |security_token|.
-  typedef base::Callback<void(uint64 android_id, uint64 security_token)>
-      CheckinRequestCallback;
+  // A callback function for the checkin request, accepting |checkin_response|
+  // protobuf.
+  typedef base::Callback<void(const checkin_proto::AndroidCheckinResponse&
+                                  checkin_response)> CheckinRequestCallback;
 
-  CheckinRequest(const CheckinRequestCallback& callback,
+  // Checkin request details.
+  struct GCM_EXPORT RequestInfo {
+    RequestInfo(uint64 android_id,
+                uint64 security_token,
+                const std::string& settings_digest,
+                const std::vector<std::string>& account_ids,
+                const checkin_proto::ChromeBuildProto& chrome_build_proto);
+    ~RequestInfo();
+
+    // Android ID of the device.
+    uint64 android_id;
+    // Security token of the device.
+    uint64 security_token;
+    // Digest of GServices settings on the device.
+    std::string settings_digest;
+    // Account IDs of GAIA accounts related to this device.
+    std::vector<std::string> account_ids;
+    // Information of the Chrome build of this device.
+    checkin_proto::ChromeBuildProto chrome_build_proto;
+  };
+
+  CheckinRequest(const RequestInfo& request_info,
                  const net::BackoffEntry::Policy& backoff_policy,
-                 const checkin_proto::ChromeBuildProto& chrome_build_proto,
-                 uint64 android_id,
-                 uint64 security_token,
-                 const std::vector<std::string>& account_ids,
+                 const CheckinRequestCallback& callback,
                  net::URLRequestContextGetter* request_context_getter);
   virtual ~CheckinRequest();
 
   void Start();
 
   // URLFetcherDelegate implementation.
   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
 
  private:
   // Schedules a retry attempt, informs the backoff of a previous request's
   // failure when |update_backoff| is true.
   void RetryWithBackoff(bool update_backoff);
 
   net::URLRequestContextGetter* request_context_getter_;
   CheckinRequestCallback callback_;
 
   net::BackoffEntry backoff_entry_;
   scoped_ptr<net::URLFetcher> url_fetcher_;
-  const checkin_proto::ChromeBuildProto chrome_build_proto_;
-  const uint64 android_id_;
-  const uint64 security_token_;
-  const std::vector<std::string> account_ids_;
+  const RequestInfo request_info_;
 
   base::WeakPtrFactory<CheckinRequest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CheckinRequest);
 };
 
 }  // namespace gcm
 
 #endif  // GOOGLE_APIS_GCM_ENGINE_CHECKIN_REQUEST_H_