Fix Matrix3F::SolveEigenproblem symmetry check.

ui/gfx/matrix3_f.cc

 // Copyright (c) 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 "ui/gfx/matrix3_f.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 
@@ skipping 107 matching lines @@
 }
 
 float Matrix3F::Determinant() const {
   return static_cast<float>(Determinant3x3(data_));
 }
 
 Vector3dF Matrix3F::SolveEigenproblem(Matrix3F* eigenvectors) const {
   // The matrix must be symmetric.
   const float epsilon = std::numeric_limits<float>::epsilon();
   if (std::abs(data_[M01] - data_[M10]) > epsilon ||
-      std::abs(data_[M02] - data_[M02]) > epsilon ||
+      std::abs(data_[M02] - data_[M20]) > epsilon ||
       std::abs(data_[M12] - data_[M21]) > epsilon) {
     NOTREACHED();
     return Vector3dF();
   }
 
   float eigenvalues[3];
   float p =
       data_[M01] * data_[M01] +
       data_[M02] * data_[M02] +
       data_[M12] * data_[M12];
@@ skipping 89 matching lines @@
       // Normalize.
       eigvec.Scale(1.0f / eigvec.Length());
       eigenvectors->set_column(i, eigvec);
     }
   }
 
   return Vector3dF(eigenvalues[0], eigenvalues[1], eigenvalues[2]);
 }
 
 }  // namespace gfx