Revert r269546 "Added support to the ASTImporter for C++ constructor initializers." as it breaks TestDataFormatterSynthVal.DataFormatterSynthValueTestCase.test_with_run_command_dwarf test - http://lab.llvm.org:8011/builders/lldb-x86_64-ubuntu-14.04-cmake/builds/14699
This is a candidate revert to Clang, but you've sent it to llvm-commits which isn't likely to help.
You should probably instead of sending a patch reply to the commit thread of the commit which broke this test. That's much more likely to get a response IMO.