[GCM] Adding basic G-services handling

google_apis/gcm/tools/mcs_probe.cc

Index: google_apis/gcm/tools/mcs_probe.cc
diff --git a/google_apis/gcm/tools/mcs_probe.cc b/google_apis/gcm/tools/mcs_probe.cc
index 6d9a7d5d47fdd31aa020d38ef34ba72db131c3bb..038f3af8c1b02e6dba5d463a6afe38ba1bf96a00 100644
--- a/google_apis/gcm/tools/mcs_probe.cc
+++ b/google_apis/gcm/tools/mcs_probe.cc
@@ -210,7 +210,8 @@ class MCSProbe {
   void LoadCallback(scoped_ptr<GCMStore::LoadResult> load_result);
   void UpdateCallback(bool success);
   void ErrorCallback();
-  void OnCheckInCompleted(uint64 android_id, uint64 secret);
+  void OnCheckInCompleted(
+      const checkin_proto::AndroidCheckinResponse& checkin_response);
   void StartMCSLogin();
 
   base::DefaultClock clock_;
@@ -423,24 +424,32 @@ void MCSProbe::CheckIn() {
   chrome_build_proto.set_channel(
       checkin_proto::ChromeBuildProto::CHANNEL_CANARY);
   chrome_build_proto.set_chrome_version(kChromeVersion);
+
+  CheckinRequest::RequestInfo request_info(
+      0, 0, std::string(), std::vector<std::string>(), chrome_build_proto);
+
   checkin_request_.reset(new CheckinRequest(
-      base::Bind(&MCSProbe::OnCheckInCompleted, base::Unretained(this)),
+      request_info,
       kDefaultBackoffPolicy,
-      chrome_build_proto,
-      0,
-      0,
-      std::vector<std::string>(),
+      base::Bind(&MCSProbe::OnCheckInCompleted, base::Unretained(this)),
       url_request_context_getter_.get()));
   checkin_request_->Start();
 }
 
-void MCSProbe::OnCheckInCompleted(uint64 android_id, uint64 secret) {
+void MCSProbe::OnCheckInCompleted(
+    const checkin_proto::AndroidCheckinResponse& checkin_response) {
+  bool success = checkin_response.has_android_id() &&
+                 checkin_response.android_id() != 0UL &&
+                 checkin_response.has_security_token() &&
+                 checkin_response.security_token() != 0UL;
   LOG(INFO) << "Check-in request completion "
-            << (android_id ? "success!" : "failure!");
-  if (!android_id || !secret)
+            << (success ? "success!" : "failure!");
+
+  if (!success)
     return;
-  android_id_ = android_id;
-  secret_ = secret;
+
+  android_id_ = checkin_response.android_id();
+  secret_ = checkin_response.security_token();
 
   gcm_store_->SetDeviceCredentials(android_id_,
                                    secret_,