tests: Change CreateGraphicsPipelines desired errors

Switched from strings to numeric IDs.

Change-Id: I2cc23a0f9e77df2bb1ed579a100951b2c79c2b0d
diff --git a/tests/layer_validation_tests.cpp b/tests/layer_validation_tests.cpp
index 21cfaf7..9f56210 100644
--- a/tests/layer_validation_tests.cpp
+++ b/tests/layer_validation_tests.cpp
@@ -7201,8 +7201,8 @@
     memset(&shaderStages, 0, 2 * sizeof(VkPipelineShaderStageCreateInfo));
 
     VkShaderObj vs(m_device, bindStateVertShaderText, VK_SHADER_STAGE_VERTEX_BIT, this);
-    VkShaderObj fs(m_device, bindStateFragShaderText, VK_SHADER_STAGE_FRAGMENT_BIT, this); // We shouldn't need a fragment shader
-    // but add it to be able to run on more devices
+    VkShaderObj fs(m_device, bindStateFragShaderText, VK_SHADER_STAGE_FRAGMENT_BIT, this);
+    // We shouldn't need a fragment shader but add it to be able to run on more devices
     shaderStages[0] = vs.GetStageCreateInfo();
     shaderStages[1] = fs.GetStageCreateInfo();
 
@@ -7240,7 +7240,7 @@
     // Attempt to Create Gfx Pipeline w/o a VS
     VkResult err;
 
-    m_errorMonitor->SetDesiredFailureMsg(VK_DEBUG_REPORT_ERROR_BIT_EXT, "Gfx Pipeline pViewportState is null. Even if ");
+    m_errorMonitor->SetDesiredFailureMsg(VK_DEBUG_REPORT_ERROR_BIT_EXT, VALIDATION_ERROR_02113);
 
     ASSERT_NO_FATAL_FAILURE(InitState());
     ASSERT_NO_FATAL_FAILURE(InitRenderTarget());
@@ -7352,8 +7352,7 @@
 TEST_F(VkLayerTest, PSOViewportCountWithoutDataAndDynScissorMismatch) {
     VkResult err;
 
-    m_errorMonitor->SetDesiredFailureMsg(VK_DEBUG_REPORT_ERROR_BIT_EXT,
-                                         "Gfx Pipeline viewportCount is 1, but pViewports is NULL. ");
+    m_errorMonitor->SetDesiredFailureMsg(VK_DEBUG_REPORT_ERROR_BIT_EXT, VALIDATION_ERROR_02110);
 
     ASSERT_NO_FATAL_FAILURE(InitState());
 
@@ -7516,7 +7515,7 @@
 TEST_F(VkLayerTest, PSOScissorCountWithoutDataAndDynViewportMismatch) {
     VkResult err;
 
-    m_errorMonitor->SetDesiredFailureMsg(VK_DEBUG_REPORT_ERROR_BIT_EXT, "Gfx Pipeline scissorCount is 1, but pScissors is NULL. ");
+    m_errorMonitor->SetDesiredFailureMsg(VK_DEBUG_REPORT_ERROR_BIT_EXT, VALIDATION_ERROR_02111);
 
     ASSERT_NO_FATAL_FAILURE(InitState());