Codegen support multiple interfaces in single webidl file & WebGPU single webidl (#30448)

* Codegen support multiple interfaces in single webidl file

* Merge GPU*.webidl into WebGPU.webidl

* Update gpu files to use WebGPUBinding module file

components/script/dom/webidls/GPUCanvasContext.webidl

@@ -1,31 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
-
-// https://gpuweb.github.io/gpuweb/#gpucanvascontext
-[Exposed=(Window, DedicatedWorker), Pref="dom.webgpu.enabled"]
-interface GPUCanvasContext {
-    readonly attribute (HTMLCanvasElement or OffscreenCanvas) canvas;
-
-    // Calling configure() a second time invalidates the previous one,
-    // and all of the textures it's produced.
-    undefined configure(GPUCanvasConfiguration descriptor);
-    undefined unconfigure();
-
-    [Throws]
-    GPUTexture getCurrentTexture();
-};
-
-enum GPUCanvasAlphaMode {
-    "opaque",
-    "premultiplied",
-};
-
-dictionary GPUCanvasConfiguration {
-    required GPUDevice device;
-    required GPUTextureFormat format;
-    GPUTextureUsageFlags usage = 0x10;  // GPUTextureUsage.RENDER_ATTACHMENT
-    sequence<GPUTextureFormat> viewFormats = [];
-    // PredefinedColorSpace colorSpace = "srgb"; // TODO
-    GPUCanvasAlphaMode alphaMode = "opaque";
-};