Fix a bunch of mojo_public_*_unittests with the new EDK.

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

 // 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.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_VALIDATION_ERRORS_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_VALIDATION_ERRORS_H_
 
+#include "mojo/public/cpp/bindings/callback.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
 namespace internal {
 
 enum ValidationError {
   // There is no validation error.
   VALIDATION_ERROR_NONE,
   // An object (struct or array) is not 8-byte aligned.
   VALIDATION_ERROR_MISALIGNED_OBJECT,
@@ skipping 45 matching lines @@
 
 const char* ValidationErrorToString(ValidationError error);
 
 void ReportValidationError(ValidationError error,
                            const char* description = nullptr);
 
 // Only used by validation tests and when there is only one thread doing message
 // validation.
 class ValidationErrorObserverForTesting {
  public:
-  ValidationErrorObserverForTesting();
+  explicit ValidationErrorObserverForTesting(const Callback<void()>& callback);
   ~ValidationErrorObserverForTesting();
 
   ValidationError last_error() const { return last_error_; }
-  void set_last_error(ValidationError error) { last_error_ = error; }
+  void set_last_error(ValidationError error) {
+    last_error_ = error;
+    callback_.Run();
+  }
 
  private:
   ValidationError last_error_;
+  Callback<void()> callback_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(ValidationErrorObserverForTesting);
 };
 
 // Used only by MOJO_INTERNAL_DLOG_SERIALIZATION_WARNING. Don't use it directly.
 //
 // The function returns true if the error is recorded (by a
 // SerializationWarningObserverForTesting object), false otherwise.
 bool ReportSerializationWarning(ValidationError error);
 
@@ skipping 26 matching lines @@
 //
 // In non-debug build, does nothing (not even compiling |condition|).
 #define MOJO_INTERNAL_DLOG_SERIALIZATION_WARNING(                        \
     condition, error, description)                                       \
   MOJO_DLOG_IF(FATAL, (condition) && !ReportSerializationWarning(error)) \
       << "The outgoing message will trigger "                            \
       << ValidationErrorToString(error) << " at the receiving side ("    \
       << description << ").";
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_VALIDATION_ERRORS_H_