Improve formatting of operator<< chains.

Before:
  llvm::outs() << "aaaaaaaaaaaaaaaa: " << aaaaaaaaaaaaaaaa << "aaaaaaaaaaaaaaaa: "
               << aaaaaaaaaaaaaaaa << "aaaaaaaaaaaaaaaa: " << aaaaaaaaaaaaaaaa;

After:
  llvm::outs() << "aaaaaaaaaaaaaaaa: " << aaaaaaaaaaaaaaaa
               << "aaaaaaaaaaaaaaaa: " << aaaaaaaaaaaaaaaa
               << "aaaaaaaaaaaaaaaa: " << aaaaaaaaaaaaaaaa;

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186320 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/TokenAnnotator.cpp b/lib/Format/TokenAnnotator.cpp
index cdac8ab..b903597 100644
--- a/lib/Format/TokenAnnotator.cpp
+++ b/lib/Format/TokenAnnotator.cpp
@@ -1082,7 +1082,7 @@
       Content = Content.drop_back(1).drop_front(1).trim();
       if (Content.size() > 1 &&
           (Content.back() == ':' || Content.back() == '='))
-        return 20;
+        return 50;
     }
     return prec::Shift;
   }