Update ceres to the latest version in google3.

Change-Id: I0165fffa55f60714f23e0096eac89fa68df75a05
diff --git a/internal/ceres/canonical_views_clustering.h b/internal/ceres/canonical_views_clustering.h
index 171ac55..48d1ed2 100644
--- a/internal/ceres/canonical_views_clustering.h
+++ b/internal/ceres/canonical_views_clustering.h
@@ -41,13 +41,15 @@
 #ifndef CERES_INTERNAL_CANONICAL_VIEWS_CLUSTERING_H_
 #define CERES_INTERNAL_CANONICAL_VIEWS_CLUSTERING_H_
 
+#ifndef CERES_NO_SUITESPARSE
+
 #include <vector>
 
-#include <glog/logging.h>
 #include "ceres/collections_port.h"
 #include "ceres/graph.h"
-#include "ceres/map_util.h"
 #include "ceres/internal/macros.h"
+#include "ceres/map_util.h"
+#include "glog/logging.h"
 
 namespace ceres {
 namespace internal {
@@ -130,4 +132,5 @@
 }  // namespace internal
 }  // namespace ceres
 
+#endif  // CERES_NO_SUITESPARSE
 #endif  // CERES_INTERNAL_CANONICAL_VIEWS_CLUSTERING_H_