Prefer to break after operators over breaking after "(".

Before:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(
    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&
                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 171386
diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index 49913ae..8f77c77 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -345,7 +345,7 @@
     if (Left.Tok.is(tok::semi) || Left.Tok.is(tok::comma))
       return 0;
     if (Left.Tok.is(tok::l_paren))
-      return 2;
+      return 20;
 
     prec::Level Level = getPrecedence(Line.Tokens[Index]);
     if (Level != prec::Unknown)