LinearSolver::Options::num_eliminate_blocks is dead.

Replaced with LinearSolver::Options::elimination_groups.

Change-Id: I7c07542ec19279a35ddf6da498d417a79395c77f
diff --git a/internal/ceres/visibility_based_preconditioner_test.cc b/internal/ceres/visibility_based_preconditioner_test.cc
index 9973d69..8c5378d 100644
--- a/internal/ceres/visibility_based_preconditioner_test.cc
+++ b/internal/ceres/visibility_based_preconditioner_test.cc
@@ -80,7 +80,9 @@
     num_rows_ = A_->num_rows();
     num_eliminate_blocks_ = problem->num_eliminate_blocks;
     num_camera_blocks_ = num_col_blocks - num_eliminate_blocks_;
-    options_.num_eliminate_blocks = num_eliminate_blocks_;
+    options_.elimination_groups.push_back(num_eliminate_blocks_);
+    options_.elimination_groups.push_back(
+        A_->block_structure()->cols.size() - num_eliminate_blocks_);
 
     vector<int> blocks(num_col_blocks - num_eliminate_blocks_, 0);
     for (int i = num_eliminate_blocks_; i < num_col_blocks; ++i) {