Add validation logic for non-nullable types.

mojo/public/cpp/bindings/lib/validation_errors.cc

 // Copyright 2014 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 "mojo/public/cpp/bindings/lib/validation_errors.h"
 
 #include "mojo/public/cpp/environment/logging.h"
 
 namespace mojo {
 namespace internal {
@@ skipping 10 matching lines @@
     case VALIDATION_ERROR_MISALIGNED_OBJECT:
       return "VALIDATION_ERROR_MISALIGNED_OBJECT";
     case VALIDATION_ERROR_ILLEGAL_MEMORY_RANGE:
       return "VALIDATION_ERROR_ILLEGAL_MEMORY_RANGE";
     case VALIDATION_ERROR_UNEXPECTED_STRUCT_HEADER:
       return "VALIDATION_ERROR_UNEXPECTED_STRUCT_HEADER";
     case VALIDATION_ERROR_UNEXPECTED_ARRAY_HEADER:
       return "VALIDATION_ERROR_UNEXPECTED_ARRAY_HEADER";
     case VALIDATION_ERROR_ILLEGAL_HANDLE:
       return "VALIDATION_ERROR_ILLEGAL_HANDLE";
+    case VALIDATION_ERROR_UNEXPECTED_INVALID_HANDLE:
+      return "VALIDATION_ERROR_UNEXPECTED_INVALID_HANDLE";
     case VALIDATION_ERROR_ILLEGAL_POINTER:
       return "VALIDATION_ERROR_ILLEGAL_POINTER";
+    case VALIDATION_ERROR_UNEXPECTED_NULL_POINTER:
+      return "VALIDATION_ERROR_UNEXPECTED_NULL_POINTER";
     case VALIDATION_ERROR_MESSAGE_HEADER_INVALID_FLAG_COMBINATION:
       return "VALIDATION_ERROR_MESSAGE_HEADER_INVALID_FLAG_COMBINATION";
     case VALIDATION_ERROR_MESSAGE_HEADER_MISSING_REQUEST_ID:
       return "VALIDATION_ERROR_MESSAGE_HEADER_MISSING_REQUEST_ID";
   }
 
   return "Unknown error";
 }
 
 void ReportValidationError(ValidationError error) {
   if (g_validation_error_observer)
     g_validation_error_observer->set_last_error(error);
   else
     MOJO_LOG(ERROR) << "Invalid message: " << ValidationErrorToString(error);
 }
 
 ValidationErrorObserverForTesting::ValidationErrorObserverForTesting()
     : last_error_(VALIDATION_ERROR_NONE) {
   MOJO_DCHECK(!g_validation_error_observer);
   g_validation_error_observer = this;
+  MOJO_LOG(WARNING) << "Non-nullable validation is turned on for testing but "
+                    << "not for production code yet!";
 }
 
 ValidationErrorObserverForTesting::~ValidationErrorObserverForTesting() {
   MOJO_DCHECK(g_validation_error_observer == this);
   g_validation_error_observer = NULL;
 }
 
+bool IsNonNullableValidationEnabled() {
+  return !!g_validation_error_observer;
+}
+
 }  // namespace internal
 }  // namespace mojo