clang-format: Make alignment of trailing comments optional ..

.. in order to support WebKit style properly.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187549 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/WhitespaceManager.cpp b/lib/Format/WhitespaceManager.cpp
index 3805278..94aca02 100644
--- a/lib/Format/WhitespaceManager.cpp
+++ b/lib/Format/WhitespaceManager.cpp
@@ -124,6 +124,8 @@
     unsigned ChangeMaxColumn = Style.ColumnLimit - Changes[i].TokenLength;
     Newlines += Changes[i].NewlinesBefore;
     if (Changes[i].IsTrailingComment) {
+      // If this comment follows an } in column 0, it probably documents the
+      // closing of a namespace and we don't want to align it.
       bool FollowsRBraceInColumn0 = i > 0 && Changes[i].NewlinesBefore == 0 &&
                                     Changes[i - 1].Kind == tok::r_brace &&
                                     Changes[i - 1].StartOfTokenColumn == 0;
@@ -140,9 +142,7 @@
                Changes[i + 1].OriginalWhitespaceRange.getEnd())) &&
           // Which is not a comment itself.
           Changes[i + 1].Kind != tok::comment;
-      if (FollowsRBraceInColumn0) {
-        // If this comment follows an } in column 0, it probably documents the
-        // closing of a namespace and we don't want to align it.
+      if (!Style.AlignTrailingComments || FollowsRBraceInColumn0) {
         alignTrailingComments(StartOfSequence, i, MinColumn);
         MinColumn = ChangeMinColumn;
         MaxColumn = ChangeMinColumn;