Introduce Android WSI extension for Vulkan.

gpu/vulkan/vulkan_device_queue.cc

 // Copyright (c) 2016 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.
 
 #include "gpu/vulkan/vulkan_device_queue.h"
 
 #include <unordered_set>
 #include <vector>
 
 #include "gpu/vulkan/vulkan_command_pool.h"
@@ skipping 57 matching lines @@
       for (size_t n = 0; n < queue_properties.size(); ++n) {
         if ((queue_properties[n].queueFlags & queue_flags) != queue_flags)
           continue;
 
 #if defined(VK_USE_PLATFORM_XLIB_KHR)
         if (options & DeviceQueueOption::PRESENTATION_SUPPORT_QUEUE_FLAG &&
             !vkGetPhysicalDeviceXlibPresentationSupportKHR(device, n, xdisplay,
                                                            visual_id)) {
           continue;
         }
+#elif defined(VK_USE_PLATFORM_ANDROID_KHR)
+// On Android, all physical devices and queue families must be capable of
+// presentation with any native window.
+// As a result there is no Android-specific query for these capabilities.
 #else
 #error Non-Supported Vulkan implementation.
 #endif
 
         queue_index = static_cast<int>(n);
         break;
       }
 
       if (-1 != queue_index) {
         device_index = static_cast<int>(i);
@@ skipping 80 matching lines @@
 
 std::unique_ptr<VulkanCommandPool> VulkanDeviceQueue::CreateCommandPool() {
   std::unique_ptr<VulkanCommandPool> command_pool(new VulkanCommandPool(this));
   if (!command_pool->Initialize())
     return nullptr;
 
   return command_pool;
 }
 
 }  // namespace gpu