clang-plugins: Don't strip non const references in auto raw ptr fixits.

tools/clang/plugins/FindBadConstructsConsumer.cpp

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "FindBadConstructsConsumer.h"
 
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/AST/Attr.h"
 #include "clang/Lex/Lexer.h"
 #include "clang/Sema/Sema.h"
@@ skipping 106 matching lines @@
   if (!non_reference_type->isPointerType())
     return "auto";
 
   std::string result =
       GetAutoReplacementTypeAsString(non_reference_type->getPointeeType());
   result += "*";
   if (non_reference_type.isLocalConstQualified())
     result += " const";
   if (non_reference_type.isLocalVolatileQualified())
     result += " volatile";
+  if (type->isReferenceType() && !non_reference_type.isLocalConstQualified()) {
+    if (type->isLValueReferenceType())
+      result += "&";
+    else if (type->isRValueReferenceType())
+      result += "&&";
+  }
   return result;
 }
 
 }  // namespace
 
 FindBadConstructsConsumer::FindBadConstructsConsumer(CompilerInstance& instance,
                                                      const Options& options)
     : ChromeClassTester(instance, options) {
   if (options.check_ipc) {
     ipc_visitor_.reset(new CheckIPCVisitor(instance));
@@ skipping 878 matching lines @@
       }
     } else if (non_reference_type->isPointerType()) {
       non_reference_type = non_reference_type->getPointeeType();
       continue;
     }
     break;
   }
 }
 
 }  // namespace chrome_checker