[GCM] Track connection failures properly

google_apis/gcm/engine/fake_connection_handler.cc

 // Copyright 2013 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.
 
 #include "google_apis/gcm/engine/fake_connection_handler.h"
 
 #include "base/logging.h"
 #include "google_apis/gcm/base/mcs_util.h"
 #include "net/socket/stream_socket.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 22 matching lines @@
       fail_login_(false),
       fail_send_(false),
       initialized_(false) {
 }
 
 FakeConnectionHandler::~FakeConnectionHandler() {
 }
 
 void FakeConnectionHandler::Init(const mcs_proto::LoginRequest& login_request,
                                  net::StreamSocket* socket) {
+  ASSERT_GE(expected_outgoing_messages_.size(), 1U);
   EXPECT_EQ(expected_outgoing_messages_.front().SerializeAsString(),
             login_request.SerializeAsString());
   expected_outgoing_messages_.pop_front();
   DVLOG(1) << "Received init call.";
   read_callback_.Run(BuildLoginResponse(fail_login_));
   initialized_ = !fail_login_;
 }
 
 void FakeConnectionHandler::Reset() {
   initialized_ = false;
@@ skipping 28 matching lines @@
 
 bool FakeConnectionHandler::AllOutgoingMessagesReceived() const {
   return expected_outgoing_messages_.empty();
 }
 
 void FakeConnectionHandler::ReceiveMessage(const MCSMessage& message) {
   read_callback_.Run(message.CloneProtobuf());
 }
 
 }  // namespace gcm