Remove shell::Loader

services/shell/tests/placeholder_unittest.cc

Index: services/shell/tests/placeholder_unittest.cc
diff --git a/components/cronet/ios/test/cronet_test_runner.mm b/services/shell/tests/placeholder_unittest.cc
similarity index 61%
copy from components/cronet/ios/test/cronet_test_runner.mm
copy to services/shell/tests/placeholder_unittest.cc
index 2272531cdc0df3512b7f74022ce41886aa4ad96f..df9d827a16e6313802c8c7af88a161812a0d3adb 100644
--- a/components/cronet/ios/test/cronet_test_runner.mm
+++ b/services/shell/tests/placeholder_unittest.cc
@@ -3,9 +3,6 @@
 // found in the LICENSE file.
 
 #include "testing/gtest/include/gtest/gtest.h"
-#include "testing/gtest_mac.h"
 
-int main(int argc, char* argv[]) {
-  ::testing::InitGoogleTest(&argc, argv);
-  return RUN_ALL_TESTS();
-}
+// Dummy test to keep mojo_shell_unittests building and linking in GYP builds.
+TEST(PlaceholderTest, Empty) {}