Update chrome/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/service/cloud_print/cloud_print_proxy_backend.cc

Index: chrome/service/cloud_print/cloud_print_proxy_backend.cc
diff --git a/chrome/service/cloud_print/cloud_print_proxy_backend.cc b/chrome/service/cloud_print/cloud_print_proxy_backend.cc
index 95c30e6fc5d0fe219e281a0d0bbc3557009061a7..84084f41cf11714790b235db9b5d26dd6042f23a 100644
--- a/chrome/service/cloud_print/cloud_print_proxy_backend.cc
+++ b/chrome/service/cloud_print/cloud_print_proxy_backend.cc
@@ -175,9 +175,7 @@ CloudPrintProxyBackend::CloudPrintProxyBackend(
   core_ = new Core(this, settings, oauth_client_info, enable_job_poll);
 }
 
-CloudPrintProxyBackend::~CloudPrintProxyBackend() {
-  DCHECK(!core_);
-}
+CloudPrintProxyBackend::~CloudPrintProxyBackend() { DCHECK(!core_.get()); }
 
 bool CloudPrintProxyBackend::InitializeWithLsid(
     const std::string& lsid,