Move vkjson into framework/native/vulkan

LVL upstream will re-organize the folders in external/LVL and will get
rid of vkjson. Thus need to move vkjson here to accordingly.

Test: adb shell cmd gpu vkjson
Bug: b/77613206
Change-Id: I5dac0c2c3a4e1d7dae8adda01cf4f2712a132469
diff --git a/vulkan/vkjson/vkjson_unittest.cc b/vulkan/vkjson/vkjson_unittest.cc
new file mode 100644
index 0000000..de765cd
--- /dev/null
+++ b/vulkan/vkjson/vkjson_unittest.cc
@@ -0,0 +1,101 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2015-2016 The Khronos Group Inc.
+// Copyright (c) 2015-2016 Valve Corporation
+// Copyright (c) 2015-2016 LunarG, Inc.
+// Copyright (c) 2015-2016 Google, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+///////////////////////////////////////////////////////////////////////////////
+
+#include "vkjson.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <iostream>
+
+#define EXPECT(X) if (!(X)) \
+  ReportFailure(__FILE__, __LINE__, #X);
+
+#define ASSERT(X) if (!(X)) { \
+  ReportFailure(__FILE__, __LINE__, #X); \
+  return 2; \
+}
+
+int g_failures;
+
+void ReportFailure(const char* file, int line, const char* assertion) {
+  std::cout << file << ":" << line << ": \"" << assertion << "\" failed."
+            << std::endl;
+  ++g_failures;
+}
+
+int main(int argc, char* argv[]) {
+  std::string errors;
+  bool result = false;
+
+  VkJsonInstance instance;
+  instance.devices.resize(1);
+  VkJsonDevice& device = instance.devices[0];
+
+  const char name[] = "Test device";
+  memcpy(device.properties.deviceName, name, sizeof(name));
+  device.properties.limits.maxImageDimension1D = 3;
+  device.properties.limits.maxSamplerLodBias = 3.5f;
+  device.properties.limits.bufferImageGranularity = 0x1ffffffffull;
+  device.properties.limits.maxViewportDimensions[0] = 1;
+  device.properties.limits.maxViewportDimensions[1] = 2;
+  VkFormatProperties format_props = {
+      VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT | VK_FORMAT_FEATURE_STORAGE_IMAGE_BIT,
+      VK_FORMAT_FEATURE_VERTEX_BUFFER_BIT,
+      VK_FORMAT_FEATURE_BLIT_SRC_BIT | VK_FORMAT_FEATURE_BLIT_DST_BIT};
+  device.formats.insert(std::make_pair(VK_FORMAT_R8_UNORM, format_props));
+  device.formats.insert(std::make_pair(VK_FORMAT_R8G8_UNORM, format_props));
+
+  std::string json = VkJsonInstanceToJson(instance);
+  std::cout << json << std::endl;
+
+  VkJsonInstance instance2;
+  result = VkJsonInstanceFromJson(json, &instance2, &errors);
+  EXPECT(result);
+  if (!result)
+    std::cout << "Error: " << errors << std::endl;
+  const VkJsonDevice& device2 = instance2.devices.at(0);
+
+  EXPECT(!memcmp(&device.properties, &device2.properties,
+                 sizeof(device.properties)));
+  for (auto& kv : device.formats) {
+    auto it = device2.formats.find(kv.first);
+    EXPECT(it != device2.formats.end());
+    EXPECT(!memcmp(&kv.second, &it->second, sizeof(kv.second)));
+  }
+
+  VkImageFormatProperties props = {};
+  json = VkJsonImageFormatPropertiesToJson(props);
+  VkImageFormatProperties props2 = {};
+  result = VkJsonImageFormatPropertiesFromJson(json, &props2, &errors);
+  EXPECT(result);
+  if (!result)
+    std::cout << "Error: " << errors << std::endl;
+
+  EXPECT(!memcmp(&props, &props2, sizeof(props)));
+
+  if (g_failures) {
+    std::cout << g_failures << " failures." << std::endl;
+    return 1;
+  } else {
+    std::cout << "Success." << std::endl;
+    return 0;
+  }
+}