tests: Adjust expected failure message

To accommodate upcoming changes, adjust SetDesiredFailureMsg()
to use Valid Usage enum rather than message string comparison.

Change-Id: I25cc48344ebda7730d6cff890ac146b5f88b2024
diff --git a/tests/layer_validation_tests.cpp b/tests/layer_validation_tests.cpp
index 09825bb..bac4c3e 100644
--- a/tests/layer_validation_tests.cpp
+++ b/tests/layer_validation_tests.cpp
@@ -14927,10 +14927,7 @@
     m_errorMonitor->VerifyFound();
     imgViewInfo.subresourceRange.baseArrayLayer = 0;
 
-    m_errorMonitor->SetDesiredFailureMsg(VK_DEBUG_REPORT_ERROR_BIT_EXT,
-                                         "vkCreateImageView called with 0 in "
-                                         "pCreateInfo->subresourceRange."
-                                         "levelCount");
+    m_errorMonitor->SetDesiredFailureMsg(VK_DEBUG_REPORT_ERROR_BIT_EXT, VALIDATION_ERROR_00768);
     // View's levelCount can't be 0 - Expect VIEW_CREATE_ERROR
     imgViewInfo.subresourceRange.levelCount = 0;
     vkCreateImageView(m_device->handle(), &imgViewInfo, NULL, &imgView);