Eigen::MappedSparseMatrix -> Eigen::Map<Eigen::SparseMatrix>

Eigen::MappedSparseMatrix has been deprecated and removed from
Eigen at HEAD.

Thanks to rmlarsen@ for fixing this.

Change-Id: I34f3b0dda2bb91ee8cc65a20e53a3d7de6929221

internal/ceres/covariance_impl.cc

diff --git a/internal/ceres/covariance_impl.cc b/internal/ceres/covariance_impl.cc
index 5498cb3..93cf41b 100644
--- a/internal/ceres/covariance_impl.cc
+++ b/internal/ceres/covariance_impl.cc
@@ -826,7 +826,7 @@
 
   // Convert the matrix to column major order as required by SparseQR.
   EigenSparseMatrix sparse_jacobian =
-      Eigen::MappedSparseMatrix<double, Eigen::RowMajor>(
+      Eigen::Map<Eigen::SparseMatrix<double, Eigen::RowMajor>>(
           jacobian.num_rows,
           jacobian.num_cols,
           static_cast<int>(jacobian.values.size()),

internal/ceres/dynamic_sparse_normal_cholesky_solver.cc

diff --git a/internal/ceres/dynamic_sparse_normal_cholesky_solver.cc b/internal/ceres/dynamic_sparse_normal_cholesky_solver.cc
index d31c422..87cc904 100644
--- a/internal/ceres/dynamic_sparse_normal_cholesky_solver.cc
+++ b/internal/ceres/dynamic_sparse_normal_cholesky_solver.cc
@@ -123,12 +123,13 @@
 
   EventLogger event_logger("DynamicSparseNormalCholeskySolver::Eigen::Solve");
 
-  Eigen::MappedSparseMatrix<double, Eigen::RowMajor> a(A->num_rows(),
-                                                       A->num_cols(),
-                                                       A->num_nonzeros(),
-                                                       A->mutable_rows(),
-                                                       A->mutable_cols(),
-                                                       A->mutable_values());
+  Eigen::Map<Eigen::SparseMatrix<double, Eigen::RowMajor>> a(
+      A->num_rows(),
+      A->num_cols(),
+      A->num_nonzeros(),
+      A->mutable_rows(),
+      A->mutable_cols(),
+      A->mutable_values());
 
   Eigen::SparseMatrix<double> lhs = a.transpose() * a;
   Eigen::SimplicialLDLT<Eigen::SparseMatrix<double>> solver;

internal/ceres/eigensparse.cc

diff --git a/internal/ceres/eigensparse.cc b/internal/ceres/eigensparse.cc
index 22ed2c4..03d7751 100644
--- a/internal/ceres/eigensparse.cc
+++ b/internal/ceres/eigensparse.cc
@@ -122,7 +122,7 @@
       values_ptr = values_.data();
     }
 
-    Eigen::MappedSparseMatrix<typename Solver::Scalar, Eigen::ColMajor>
+    Eigen::Map<Eigen::SparseMatrix<typename Solver::Scalar, Eigen::ColMajor>>
         eigen_lhs(lhs->num_rows(),
                   lhs->num_rows(),
                   lhs->num_nonzeros(),

internal/ceres/inner_product_computer_test.cc

diff --git a/internal/ceres/inner_product_computer_test.cc b/internal/ceres/inner_product_computer_test.cc
index ac564f4..f65c8a3 100644
--- a/internal/ceres/inner_product_computer_test.cc
+++ b/internal/ceres/inner_product_computer_test.cc
@@ -50,7 +50,7 @@
     CompressedRowSparseMatrix* actual_product_crsm =                         \
         inner_product_computer->mutable_result();                            \
     Matrix actual_inner_product =                                            \
-        Eigen::MappedSparseMatrix<double, Eigen::ColMajor>(                  \
+        Eigen::Map<Eigen::SparseMatrix<double, Eigen::ColMajor>>(            \
             actual_product_crsm->num_rows(),                                 \
             actual_product_crsm->num_rows(),                                 \
             actual_product_crsm->num_nonzeros(),                             \