Improve formatting of builder-type calls.

Before:
aaaaaaa->aaaaaaa->aaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaa(aaaaaaaaaaaaaaa);

After:
aaaaaaa->aaaaaaa
    ->aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
    ->aaaaaaaa(aaaaaaaaaaaaaaa);

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175441 91177308-0d34-0410-b5e6-96231b3b80d8