Revert of Clang plugin to check that unstable types are not used in IPC.

tools/clang/plugins/FindBadConstructsConsumer.h

Index: tools/clang/plugins/FindBadConstructsConsumer.h
diff --git a/tools/clang/plugins/FindBadConstructsConsumer.h b/tools/clang/plugins/FindBadConstructsConsumer.h
index fb8d1d6c69226ca6e8c1222a9bc7c55e8516f656..8f8fc87046630911ac93ae59995da6d5c8ca8a68 100644
--- a/tools/clang/plugins/FindBadConstructsConsumer.h
+++ b/tools/clang/plugins/FindBadConstructsConsumer.h
@@ -20,8 +20,6 @@
 #ifndef TOOLS_CLANG_PLUGINS_FINDBADCONSTRUCTSCONSUMER_H_
 #define TOOLS_CLANG_PLUGINS_FINDBADCONSTRUCTSCONSUMER_H_
 
-#include <memory>
-
 #include "clang/AST/AST.h"
 #include "clang/AST/ASTConsumer.h"
 #include "clang/AST/Attr.h"
@@ -31,7 +29,6 @@
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/SourceLocation.h"
 
-#include "CheckIPCVisitor.h"
 #include "ChromeClassTester.h"
 #include "Options.h"
 #include "SuppressibleDiagnosticBuilder.h"
@@ -46,14 +43,8 @@
   FindBadConstructsConsumer(clang::CompilerInstance& instance,
                             const Options& options);
 
-  void Traverse(clang::ASTContext& context);
-
   // RecursiveASTVisitor:
-  bool shouldVisitTemplateInstantiations() const;
-  bool TraverseDecl(clang::Decl* decl);
   bool VisitDecl(clang::Decl* decl);
-  bool VisitTemplateSpecializationType(clang::TemplateSpecializationType* spec);
-  bool VisitCallExpr(clang::CallExpr* call_expr);
 
   // ChromeClassTester overrides:
   void CheckChromeClass(clang::SourceLocation record_location,
@@ -119,8 +110,6 @@
   unsigned diag_note_implicit_dtor_;
   unsigned diag_note_public_dtor_;
   unsigned diag_note_protected_non_virtual_dtor_;
-
-  std::unique_ptr<CheckIPCVisitor> ipc_visitor_;
 };
 
 }  // namespace chrome_checker