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diff --git a/tools/clang/plugins/FindBadConstructsConsumer.h b/tools/clang/plugins/FindBadConstructsConsumer.h
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+// 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.
+
+// This file defines a bunch of recurring problems in the Chromium C++ code.
+//
+// Checks that are implemented:
+// - Constructors/Destructors should not be inlined if they are of a complex
+//   class type.
+// - Missing "virtual" keywords on methods that should be virtual.
+// - Non-annotated overriding virtual methods.
+// - Virtual methods with nonempty implementations in their headers.
+// - Classes that derive from base::RefCounted / base::RefCountedThreadSafe
+//   should have protected or private destructors.
+// - WeakPtrFactory members that refer to their outer class should be the last
+//   member.
+// - Enum types with a xxxx_LAST or xxxxLast const actually have that constant
+//   have the maximal value for that type.
+
+#include "clang/AST/AST.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/Attr.h"
+#include "clang/AST/CXXInheritance.h"
+#include "clang/AST/TypeLoc.h"
+#include "clang/Basic/SourceManager.h"
+
+#include "ChromeClassTester.h"
+#include "Options.h"
+
+namespace chrome_checker {
+
+// Searches for constructs that we know we don't want in the Chromium code base.
+class FindBadConstructsConsumer : public ChromeClassTester {
+ public:
+  FindBadConstructsConsumer(clang::CompilerInstance& instance,
+                            const Options& options);
+
+  // ChromeClassTester overrides:
+  virtual void CheckChromeClass(clang::SourceLocation record_location,
+                                clang::CXXRecordDecl* record);
+  virtual void CheckChromeEnum(clang::SourceLocation enum_location,
+                               clang::EnumDecl* enum_decl);
+
+ private:
+  // The type of problematic ref-counting pattern that was encountered.
+  enum RefcountIssue { None, ImplicitDestructor, PublicDestructor };
+
+  void CheckCtorDtorWeight(clang::SourceLocation record_location,
+                           clang::CXXRecordDecl* record);
+
+  void CheckVirtualMethod(const clang::CXXMethodDecl* method,
+                          bool warn_on_inline_bodies);
+
+  bool InTestingNamespace(const clang::Decl* record);
+  bool IsMethodInBannedOrTestingNamespace(const clang::CXXMethodDecl* method);
+
+  void CheckOverriddenMethod(const clang::CXXMethodDecl* method);
+  void CheckVirtualMethods(clang::SourceLocation record_location,
+                           clang::CXXRecordDecl* record,
+                           bool warn_on_inline_bodies);
+
+  void CountType(const clang::Type* type,
+                 int* trivial_member,
+                 int* non_trivial_member,
+                 int* templated_non_trivial_member);
+
+  static RefcountIssue CheckRecordForRefcountIssue(
+      const clang::CXXRecordDecl* record,
+      clang::SourceLocation& loc);
+  clang::DiagnosticsEngine::Level getErrorLevel();
+  static bool IsRefCountedCallback(const clang::CXXBaseSpecifier* base,
+                                   clang::CXXBasePath& path,
+                                   void* user_data);
+  static bool HasPublicDtorCallback(const clang::CXXBaseSpecifier* base,
+                                    clang::CXXBasePath& path,
+                                    void* user_data);
+  void PrintInheritanceChain(const clang::CXXBasePath& path);
+  unsigned DiagnosticForIssue(RefcountIssue issue);
+  void CheckRefCountedDtors(clang::SourceLocation record_location,
+                            clang::CXXRecordDecl* record);
+
+  void CheckWeakPtrFactoryMembers(clang::SourceLocation record_location,
+                                  clang::CXXRecordDecl* record);
+
+  const Options options_;
+
+  unsigned diag_method_requires_override_;
+  unsigned diag_method_requires_virtual_;
+  unsigned diag_no_explicit_dtor_;
+  unsigned diag_public_dtor_;
+  unsigned diag_protected_non_virtual_dtor_;
+  unsigned diag_weak_ptr_factory_order_;
+  unsigned diag_bad_enum_last_value_;
+  unsigned diag_note_inheritance_;
+  unsigned diag_note_implicit_dtor_;
+  unsigned diag_note_public_dtor_;
+  unsigned diag_note_protected_non_virtual_dtor_;
+};
+
+}  // namespace chrome_checker