dawn.json: remove leftovers from implementation-based swapchains.

This also removes the need for special casing the swapchain creation
proc in the fuzzers because it is no longer possible to have a valid
CreateSwapChain call since the wire can't create a surface (which is no
longer optional).

Bug: dawn:269
Change-Id: Icc6ed5e82c1d5382628d71d212640d238cfba348
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/126425
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Loko Kung <lokokung@google.com>

dawn.json

@@ -1124,16 +1124,6 @@
             },
             {
                 "name": "create swap chain",
-                "tags": ["dawn"],
-                "returns": "swap chain",
-                "args": [
-                    {"name": "surface", "type": "surface", "optional": true},
-                    {"name": "descriptor", "type": "swap chain descriptor", "annotation": "const*"}
-                ]
-            },
-            {
-                "name": "create swap chain",
-                "tags": ["upstream", "emscripten"],
                 "returns": "swap chain",
                 "args": [
                     {"name": "surface", "type": "surface"},
@@ -2599,16 +2589,6 @@
     "swap chain": {
         "category": "object",
         "methods": [
-            {
-                "name": "configure",
-                "tags": ["dawn"],
-                "args": [
-                    {"name": "format", "type": "texture format"},
-                    {"name": "allowed usage", "type": "texture usage"},
-                    {"name": "width", "type": "uint32_t"},
-                    {"name": "height", "type": "uint32_t"}
-                ]
-            },
             {"name": "get current texture view", "returns": "texture view"},
             {"name": "present"}
         ]
@@ -2622,8 +2602,7 @@
             {"name": "format", "type": "texture format"},
             {"name": "width", "type": "uint32_t"},
             {"name": "height", "type": "uint32_t"},
-            {"name": "present mode", "type": "present mode"},
-            {"name": "implementation", "type": "uint64_t", "default": 0, "tags": ["deprecated"]}
+            {"name": "present mode", "type": "present mode"}
         ]
     },
     "s type": {

src/dawn/fuzzers/DawnWireServerFuzzer.cpp

@@ -48,18 +48,8 @@ class DevNull : public dawn::wire::CommandSerializer {
 };
 
 std::unique_ptr<dawn::native::Instance> sInstance;
-WGPUProcDeviceCreateSwapChain sOriginalDeviceCreateSwapChain = nullptr;
 static bool (*sAdapterSupported)(const dawn::native::Adapter&) = nullptr;
 
-WGPUSwapChain ErrorDeviceCreateSwapChain(WGPUDevice device,
-                                         WGPUSurface surface,
-                                         const WGPUSwapChainDescriptor*) {
-    WGPUSwapChainDescriptor desc = {};
-    // A 0 implementation will trigger a swapchain creation error.
-    desc.implementation = 0;
-    return sOriginalDeviceCreateSwapChain(device, surface, &desc);
-}
-
 }  // namespace
 
 int DawnWireServerFuzzer::Initialize(int* argc, char*** argv) {
@@ -99,13 +89,6 @@ int DawnWireServerFuzzer::Run(const uint8_t* data,
 
     DawnProcTable procs = dawn::native::GetProcs();
 
-    // Swapchains receive a pointer to an implementation. The fuzzer will pass garbage in so we
-    // intercept calls to create swapchains and make sure they always return error swapchains.
-    // This is ok for fuzzing because embedders of dawn_wire would always define their own
-    // swapchain handling.
-    sOriginalDeviceCreateSwapChain = procs.deviceCreateSwapChain;
-    procs.deviceCreateSwapChain = ErrorDeviceCreateSwapChain;
-
     // Override requestAdapter to find an adapter that the fuzzer supports.
     procs.instanceRequestAdapter = [](WGPUInstance cInstance,
                                       const WGPURequestAdapterOptions* options,

src/dawn/native/SwapChain.cpp

@@ -41,10 +41,6 @@ class ErrorSwapChain final : public SwapChainBase {
 MaybeError ValidateSwapChainDescriptor(const DeviceBase* device,
                                        const Surface* surface,
                                        const SwapChainDescriptor* descriptor) {
-    DAWN_INVALID_IF(descriptor->implementation != 0,
-                    "Implementation-based swapchains are no longer supported.");
-
-    DAWN_INVALID_IF(surface == nullptr, "At least one of surface or implementation must be set");
     DAWN_INVALID_IF(surface->IsError(), "[Surface] is invalid.");
 
     DAWN_TRY(ValidatePresentMode(descriptor->presentMode));

src/dawn/samples/SampleUtils.cpp

@@ -179,7 +179,6 @@ wgpu::Device CreateCppDawnDevice() {
     swapChainDesc.width = kWidth;
     swapChainDesc.height = kHeight;
     swapChainDesc.presentMode = WGPUPresentMode_Mailbox;
-    swapChainDesc.implementation = 0;
     WGPUSwapChain backendSwapChain =
         backendProcs.deviceCreateSwapChain(backendDevice, surface, &swapChainDesc);