[NFC] Header cleanup

Summary: Removed unused headers, replaced some headers with forward class declarations

Patch by: Eugene <claprix@yandex.ru>

Differential Revision: https://reviews.llvm.org/D20100

llvm-svn: 275882
diff --git a/clang/lib/Frontend/Rewrite/HTMLPrint.cpp b/clang/lib/Frontend/Rewrite/HTMLPrint.cpp
index f5fad34..15af644 100644
--- a/clang/lib/Frontend/Rewrite/HTMLPrint.cpp
+++ b/clang/lib/Frontend/Rewrite/HTMLPrint.cpp
@@ -11,7 +11,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "clang/Rewrite/Frontend/ASTConsumers.h"
 #include "clang/AST/ASTConsumer.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/Decl.h"
@@ -21,7 +20,7 @@
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Rewrite/Core/HTMLRewrite.h"
 #include "clang/Rewrite/Core/Rewriter.h"
-#include "llvm/Support/MemoryBuffer.h"
+#include "clang/Rewrite/Frontend/ASTConsumers.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace clang;