vulkan: add swapchain.h

Move everything belongs to swapchain.cpp out of loader.h to swapchain.h.

Change-Id: I4a6268d703b60e5661b09917eed129d2d227a63c
diff --git a/vulkan/libvulkan/swapchain.h b/vulkan/libvulkan/swapchain.h
new file mode 100644
index 0000000..a4fb750
--- /dev/null
+++ b/vulkan/libvulkan/swapchain.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2015 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef LIBVULKAN_SWAPCHAIN_H
+#define LIBVULKAN_SWAPCHAIN_H 1
+
+#include <vulkan/vulkan.h>
+
+namespace vulkan {
+
+// clang-format off
+VKAPI_ATTR VkResult CreateAndroidSurfaceKHR_Bottom(VkInstance instance, const VkAndroidSurfaceCreateInfoKHR* pCreateInfo, const VkAllocationCallbacks* allocator, VkSurfaceKHR* surface);
+VKAPI_ATTR void DestroySurfaceKHR_Bottom(VkInstance instance, VkSurfaceKHR surface, const VkAllocationCallbacks* allocator);
+VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceSupportKHR_Bottom(VkPhysicalDevice pdev, uint32_t queue_family, VkSurfaceKHR surface, VkBool32* pSupported);
+VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceCapabilitiesKHR_Bottom(VkPhysicalDevice pdev, VkSurfaceKHR surface, VkSurfaceCapabilitiesKHR* capabilities);
+VKAPI_ATTR VkResult GetPhysicalDeviceSurfaceFormatsKHR_Bottom(VkPhysicalDevice pdev, VkSurfaceKHR surface, uint32_t* count, VkSurfaceFormatKHR* formats);
+VKAPI_ATTR VkResult GetPhysicalDeviceSurfacePresentModesKHR_Bottom(VkPhysicalDevice pdev, VkSurfaceKHR surface, uint32_t* count, VkPresentModeKHR* modes);
+VKAPI_ATTR VkResult CreateSwapchainKHR_Bottom(VkDevice device, const VkSwapchainCreateInfoKHR* create_info, const VkAllocationCallbacks* allocator, VkSwapchainKHR* swapchain_handle);
+VKAPI_ATTR void DestroySwapchainKHR_Bottom(VkDevice device, VkSwapchainKHR swapchain_handle, const VkAllocationCallbacks* allocator);
+VKAPI_ATTR VkResult GetSwapchainImagesKHR_Bottom(VkDevice device, VkSwapchainKHR swapchain_handle, uint32_t* count, VkImage* images);
+VKAPI_ATTR VkResult AcquireNextImageKHR_Bottom(VkDevice device, VkSwapchainKHR swapchain_handle, uint64_t timeout, VkSemaphore semaphore, VkFence fence, uint32_t* image_index);
+VKAPI_ATTR VkResult QueuePresentKHR_Bottom(VkQueue queue, const VkPresentInfoKHR* present_info);
+// clang-format on
+
+}  // namespace vulkan
+
+#endif  // LIBVULKAN_SWAPCHAIN_H