Bug 1860921 - Revert Texture::Destroy() and add Texture::ForceDestroy() r=webgpu-reviewers,nical

This is a short term fix. Long term fix needs to be done by Bug 1860958.
Presenting WebGPU without readback needs a way to destroy Texture. Then Texture::ForceDestroy() is added for it.

Differential Revision: https://phabricator.services.mozilla.com/D191829

dom/webgpu/CanvasContext.cpp

@@ -201,7 +201,7 @@ void CanvasContext::SwapChainPresent() {
   mBridge->SwapChainPresent(mTexture->mId, *mLastRemoteTextureId,
                             *mRemoteTextureOwnerId);
   if (mUseExternalTextureInSwapChain) {
-    mTexture->Destroy();
+    mTexture->ForceDestroy();
     mNewTextureRequested = true;
   }
 }

dom/webgpu/Texture.cpp

@@ -67,6 +67,13 @@ already_AddRefed<TextureView> Texture::CreateView(
   return view.forget();
 }
 
-void Texture::Destroy() { Cleanup(); }
+void Texture::Destroy() {
+  // TODO: we don't have to implement it right now, but it's used by the
+  // examples
+
+  // XXX Bug 1860958.
+}
+
+void Texture::ForceDestroy() { Cleanup(); }
 
 }  // namespace mozilla::webgpu

dom/webgpu/Texture.h

@@ -56,6 +56,7 @@ class Texture final : public ObjectBase, public ChildOf<Device> {
   already_AddRefed<TextureView> CreateView(
       const dom::GPUTextureViewDescriptor& aDesc);
   void Destroy();
+  void ForceDestroy();
 
   uint32_t Width() const { return mSize.width; }
   uint32_t Height() const { return mSize.height; }