Add webgpu feature flag (#34444)

* Move script gpu files into webgpu folder

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* Modify gpu webidls

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* move gpu realted webidl

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* add webgpu feature to script

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* add dummy implementation for gpucanvascontext

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* fmt

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* add skip-if CARGO_FEATURE_WEBGPU

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* Move NavigatorGPU and workerNavigator GPU to webgpu idl

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* fmt and cleanup

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* review fix

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* enable webgpu by default and also some fmt fix

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* Add pref back, fix imports, small cleanups

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

---------

Signed-off-by: atbrakhi <atbrakhi@igalia.com>

components/script/dom/webidls/GPUCanvasContext.webidl

@@ -0,0 +1,9 @@
+/* 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://html.spec.whatwg.org/multipage/#htmlcanvaselement
+[Exposed=(Window, DedicatedWorker), Pref="dom.webgpu.enabled"]
+interface GPUCanvasContext {
+    readonly attribute (HTMLCanvasElement or OffscreenCanvas) canvas;
+};

components/script/dom/webidls/Navigator.webidl

@@ -14,7 +14,6 @@ Navigator includes NavigatorLanguage;
 //Navigator includes NavigatorStorageUtils;
 Navigator includes NavigatorPlugins;
 Navigator includes NavigatorCookies;
-Navigator includes NavigatorGPU;
 Navigator includes NavigatorConcurrentHardware;
 
 // https://html.spec.whatwg.org/multipage/#navigatorid

components/script/dom/webidls/WebGPU.webidl

@@ -2,6 +2,8 @@
  * 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/. */
 
+// skip-unless CARGO_FEATURE_WEBGPU
+
 // Source: WebGPU (https://gpuweb.github.io/gpuweb/)
 // Direct source: https://github.com/w3c/webref/blob/curated/ed/idl/webgpu.idl
 
@@ -66,10 +68,9 @@ interface GPUAdapterInfo {
 interface mixin NavigatorGPU {
     [SameObject, Pref="dom.webgpu.enabled", Exposed=(Window /* ,DedicatedWorker */)] readonly attribute GPU gpu;
 };
-// NOTE: see `Navigator.webidl`
-// Navigator includes NavigatorGPU;
-// NOTE: see `WorkerNavigator.webidl`
-// WorkerNavigator includes NavigatorGPU;
+
+Navigator includes NavigatorGPU;
+WorkerNavigator includes NavigatorGPU;
 
 [Exposed=(Window, DedicatedWorker), Pref="dom.webgpu.enabled"]
 interface GPU {
@@ -1137,17 +1138,12 @@ enum GPUQueryType {
     "timestamp"
 };
 
-[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.
-    [Throws]
+partial interface GPUCanvasContext {
+    [Throws, Pref="dom.webgpu.enabled"]
     undefined configure(GPUCanvasConfiguration descriptor);
-    undefined unconfigure();
-
-    [Throws]
+    [Pref="dom.webgpu.enabled"] undefined unconfigure();
+    [Throws, Pref="dom.webgpu.enabled"]
     GPUTexture getCurrentTexture();
 };
 

components/script/dom/webidls/WorkerNavigator.webidl

@@ -17,7 +17,3 @@ partial interface WorkerNavigator {
   [Pref="dom.permissions.enabled"] readonly attribute Permissions permissions;
 };
 
-[Exposed=DedicatedWorker]
-partial interface WorkerNavigator {
-    [SameObject, Pref="dom.webgpu.enabled"] readonly attribute GPU gpu;
-};