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

tools/clang/plugins/FindBadConstructsConsumer.cpp

Index: tools/clang/plugins/FindBadConstructsConsumer.cpp
diff --git a/tools/clang/plugins/FindBadConstructsConsumer.cpp b/tools/clang/plugins/FindBadConstructsConsumer.cpp
index c79a764eb953be319cb5e83fe766cee2bbaa8a3c..ba8883c7ee810378a039e32a5629a57a4829846d 100644
--- a/tools/clang/plugins/FindBadConstructsConsumer.cpp
+++ b/tools/clang/plugins/FindBadConstructsConsumer.cpp
@@ -134,6 +134,10 @@ FindBadConstructsConsumer::FindBadConstructsConsumer(CompilerInstance& instance,
       diagnostic().getCustomDiagID(DiagnosticsEngine::Note, kNotePublicDtor);
   diag_note_protected_non_virtual_dtor_ = diagnostic().getCustomDiagID(
       DiagnosticsEngine::Note, kNoteProtectedNonVirtualDtor);
+
+  if (options.check_ipc) {
+    ipc_checker_.reset(new CheckIPCVisitor(instance));
+  }
 }
 
 bool FindBadConstructsConsumer::VisitDecl(clang::Decl* decl) {
@@ -218,6 +222,13 @@ void FindBadConstructsConsumer::CheckChromeEnum(SourceLocation enum_location,
   }
 }
 
+void FindBadConstructsConsumer::HandleTranslationUnit(ASTContext& context) {
+  ChromeClassTester::HandleTranslationUnit(context);
+  if (auto checker = ipc_checker()) {
+    checker->Visit(context);
+  }
+}
+
 void FindBadConstructsConsumer::CheckCtorDtorWeight(
     SourceLocation record_location,
     CXXRecordDecl* record) {