Move internal/ceres/mock_log.h to internal/ceres/gmock/mock-log.h

Change-Id: I652b25b7bfb56edf814d73f2dd7c796f9af983d5
diff --git a/internal/ceres/levenberg_marquardt_strategy_test.cc b/internal/ceres/levenberg_marquardt_strategy_test.cc
index 5f82b57..e6cce91 100644
--- a/internal/ceres/levenberg_marquardt_strategy_test.cc
+++ b/internal/ceres/levenberg_marquardt_strategy_test.cc
@@ -31,8 +31,8 @@
 
 #include "glog/logging.h"
 #include "gmock/gmock.h"
+#include "gmock/mock-log.h"
 #include "gtest/gtest.h"
-#include "ceres/mock_log.h"
 #include "ceres/trust_region_strategy.h"
 #include "ceres/levenberg_marquardt_strategy.h"
 #include "ceres/internal/eigen.h"