Update Clang for 3.5 rebase (r209713).

Change-Id: I8c9133b0f8f776dc915f270b60f94962e771bc83
diff --git a/unittests/AST/CommentParser.cpp b/unittests/AST/CommentParser.cpp
index c72aef1..0064078 100644
--- a/unittests/AST/CommentParser.cpp
+++ b/unittests/AST/CommentParser.cpp
@@ -55,7 +55,7 @@
 
 FullComment *CommentParserTest::parseString(const char *Source) {
   MemoryBuffer *Buf = MemoryBuffer::getMemBuffer(Source);
-  FileID File = SourceMgr.createFileIDForMemBuffer(Buf);
+  FileID File = SourceMgr.createFileID(Buf);
   SourceLocation Begin = SourceMgr.getLocForStartOfFile(File);
 
   Lexer L(Allocator, Diags, Traits, Begin, Source, Source + strlen(Source));