Introduce Android WSI extension for Vulkan.

gpu/vulkan/vulkan_device_queue.cc

Index: gpu/vulkan/vulkan_device_queue.cc
diff --git a/gpu/vulkan/vulkan_device_queue.cc b/gpu/vulkan/vulkan_device_queue.cc
index aa6f987c7a62c9bef0e1489c3b6e7960f311448a..28000d5e47e4021ec3e5825f98bdd5ed427b1943 100644
--- a/gpu/vulkan/vulkan_device_queue.cc
+++ b/gpu/vulkan/vulkan_device_queue.cc
@@ -75,6 +75,10 @@ bool VulkanDeviceQueue::Initialize(uint32_t options) {
                                                            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