Add activity recording capability to gcm internals page. User can refresh, start/stop recording, an…

google_apis/gcm/engine/mcs_client.cc

Index: google_apis/gcm/engine/mcs_client.cc
diff --git a/google_apis/gcm/engine/mcs_client.cc b/google_apis/gcm/engine/mcs_client.cc
index da8300c799266957263fff5d38b676d114e8e1f8..ef8d47a95bab9f3eec0759845b056f0b6bf379e0 100644
--- a/google_apis/gcm/engine/mcs_client.cc
+++ b/google_apis/gcm/engine/mcs_client.cc
@@ -15,6 +15,7 @@
 #include "google_apis/gcm/base/mcs_util.h"
 #include "google_apis/gcm/base/socket_stream.h"
 #include "google_apis/gcm/engine/connection_factory.h"
+#include "google_apis/gcm/gcm_stats_recorder.h"
 
 using namespace google::protobuf::io;
 
@@ -128,6 +129,14 @@ ReliablePacketInfo::ReliablePacketInfo()
 }
 ReliablePacketInfo::~ReliablePacketInfo() {}
 
+int MCSClient::GetSendQueueSize() const {
+  return to_send_.size();
+}
+
+int MCSClient::GetUnackedQueueSize() const {
+  return to_resend_.size();
+}
+
 std::string MCSClient::GetStateString() const {
   switch(state_) {
     case UNINITIALIZED:
@@ -147,7 +156,8 @@ std::string MCSClient::GetStateString() const {
 MCSClient::MCSClient(const std::string& version_string,
                      base::Clock* clock,
                      ConnectionFactory* connection_factory,
-                     GCMStore* gcm_store)
+                     GCMStore* gcm_store,
+                     GCMStatsRecorder* recorder)
     : version_string_(version_string),
       clock_(clock),
       state_(UNINITIALIZED),
@@ -160,6 +170,7 @@ MCSClient::MCSClient(const std::string& version_string,
       stream_id_out_(0),
       stream_id_in_(0),
       gcm_store_(gcm_store),
+      recorder_(recorder),
       weak_ptr_factory_(this) {
 }
 
@@ -495,6 +506,11 @@ void MCSClient::SendPacketToWire(ReliablePacketInfo* packet_info) {
         base::Time::kMicrosecondsPerSecond) - sent;
     DVLOG(1) << "Message was queued for " << queued << " seconds.";
     data_message->set_queued(queued);
+    recorder_->RecordSentToWire(
+        data_message->category(),
+        data_message->to(),
+        data_message->id(),
+        queued);
   }
 
   // Set the proper last received stream id to acknowledge received server
@@ -862,6 +878,13 @@ void MCSClient::NotifyMessageSendStatus(
 
   const mcs_proto::DataMessageStanza* data_message_stanza =
       reinterpret_cast<const mcs_proto::DataMessageStanza*>(&protobuf);
+  recorder_->RecordNotifySendStatus(
+      data_message_stanza->category(),
+      data_message_stanza->to(),
+      data_message_stanza->id(),
+      status,
+      protobuf.ByteSize(),
+      data_message_stanza->ttl());
   message_sent_callback_.Run(
       data_message_stanza->device_user_id(),
       data_message_stanza->category(),