fuzzing: Add Vulkan backend fuzzer

Bug: dawn:295
Change-Id: If134a076e53eb6c1b03712b7b14436464bf5f73a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/14680
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

src/fuzzers/BUILD.gn

@@ -170,3 +170,15 @@ dawn_fuzzer_test("dawn_wire_server_and_frontend_fuzzer") {
 
   additional_configs = [ "${dawn_root}/src/common:dawn_internal" ]
 }
+
+dawn_fuzzer_test("dawn_wire_server_and_vulkan_backend_fuzzer") {
+  sources = [
+    "DawnWireServerAndVulkanBackendFuzzer.cpp",
+  ]
+
+  deps = [
+    ":dawn_wire_server_fuzzer_common",
+  ]
+
+  additional_configs = [ "${dawn_root}/src/common:dawn_internal" ]
+}

src/fuzzers/DawnWireServerAndVulkanBackendFuzzer.cpp

@@ -0,0 +1,38 @@
+// Copyright 2019 The Dawn Authors
+//
+// 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 "DawnWireServerFuzzer.h"
+
+#include "common/Assert.h"
+#include "dawn_native/DawnNative.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    return DawnWireServerFuzzer::Run(data, size, [](dawn_native::Instance* instance) {
+        instance->DiscoverDefaultAdapters();
+
+        std::vector<dawn_native::Adapter> adapters = instance->GetAdapters();
+
+        wgpu::Device device;
+        for (dawn_native::Adapter adapter : adapters) {
+            if (adapter.GetBackendType() == dawn_native::BackendType::Vulkan &&
+                adapter.GetDeviceType() == dawn_native::DeviceType::CPU) {
+                device = wgpu::Device::Acquire(adapter.CreateDevice());
+                break;
+            }
+        }
+
+        ASSERT(device.Get() != nullptr);
+        return device;
+    });
+}