Revert "clang-format: Add a consumer to diagnostics engine"

This reverts commit df00267.
clang-format should not depend on Frontend, see comment on
https://reviews.llvm.org/D90121.

Author: nico

clang/tools/clang-format/CMakeLists.txt

@@ -7,7 +7,6 @@ add_clang_tool(clang-format
 set(CLANG_FORMAT_LIB_DEPS
   clangBasic
   clangFormat
-  clangFrontend
   clangRewrite
   clangToolingCore
   )

clang/tools/clang-format/ClangFormat.cpp

@@ -18,7 +18,6 @@
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/Version.h"
 #include "clang/Format/Format.h"
-#include "clang/Frontend/TextDiagnosticPrinter.h"
 #include "clang/Rewrite/Core/Rewriter.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/FileSystem.h"
@@ -424,11 +423,9 @@ static bool format(StringRef FileName) {
     IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
         new llvm::vfs::InMemoryFileSystem);
     FileManager Files(FileSystemOptions(), InMemoryFileSystem);
-    IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts(new DiagnosticOptions());
-    TextDiagnosticPrinter DiagnosticsConsumer(errs(), &*DiagOpts);
     DiagnosticsEngine Diagnostics(
-        IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs), &*DiagOpts,
-        &DiagnosticsConsumer, false);
+        IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs),
+        new DiagnosticOptions);
     SourceManager Sources(Diagnostics, Files);
     FileID ID = createInMemoryFile(AssumedFileName, Code.get(), Sources, Files,
                                    InMemoryFileSystem.get());