Moved HTMLDiagnostics to lib/Driver.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55274 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/clang.cpp b/Driver/clang.cpp
index 419fa98..fad1624 100644
--- a/Driver/clang.cpp
+++ b/Driver/clang.cpp
@@ -24,7 +24,7 @@
 
 #include "clang.h"
 #include "ASTConsumers.h"
-#include "HTMLDiagnostics.h"
+#include "clang/Driver/HTMLDiagnostics.h"
 #include "clang/Driver/InitHeaderSearch.h"
 #include "clang/Driver/TextDiagnosticBuffer.h"
 #include "clang/Driver/TextDiagnosticPrinter.h"