Correct the OffscreenCanvas.getContext API

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebGL2RenderingContext_h
 #define WebGL2RenderingContext_h
 
 #include "core/html/canvas/CanvasRenderingContextFactory.h"
 #include "modules/webgl/WebGL2RenderingContextBase.h"
 #include <memory>
@@ skipping 14 matching lines @@
   class Factory : public CanvasRenderingContextFactory {
     WTF_MAKE_NONCOPYABLE(Factory);
 
    public:
     Factory() {}
     ~Factory() override {}
 
     CanvasRenderingContext* create(HTMLCanvasElement*,
                                    const CanvasContextCreationAttributes&,
                                    Document&) override;
+    CanvasRenderingContext* create(
+        ScriptState*,
+        OffscreenCanvas*,
+        const CanvasContextCreationAttributes&) override;
     CanvasRenderingContext::ContextType getContextType() const override {
       return CanvasRenderingContext::ContextWebgl2;
     }
     void onError(HTMLCanvasElement*, const String& error) override;
   };
 
   ~WebGL2RenderingContext() override;
 
   CanvasRenderingContext::ContextType getContextType() const override {
     return CanvasRenderingContext::ContextWebgl2;
   }
   ImageBitmap* transferToImageBitmap(ScriptState*) final;
   String contextName() const override { return "WebGL2RenderingContext"; }
   void registerContextExtensions() override;
   void setCanvasGetContextResult(RenderingContext&) final;
   void setOffscreenCanvasGetContextResult(OffscreenRenderingContext&) final;
 
   DECLARE_VIRTUAL_TRACE();
 
   DECLARE_VIRTUAL_TRACE_WRAPPERS();
 
  protected:
   WebGL2RenderingContext(
       HTMLCanvasElement* passedCanvas,
       std::unique_ptr<WebGraphicsContext3DProvider>,
       const CanvasContextCreationAttributes& requestedAttributes);
 
+  WebGL2RenderingContext(
+      OffscreenCanvas* passedOffscreenCanvas,
+      std::unique_ptr<WebGraphicsContext3DProvider>,
+      const CanvasContextCreationAttributes& requestedAttributes);
+
   Member<EXTColorBufferFloat> m_extColorBufferFloat;
   Member<EXTDisjointTimerQueryWebGL2> m_extDisjointTimerQueryWebGL2;
   Member<EXTTextureFilterAnisotropic> m_extTextureFilterAnisotropic;
   Member<OESTextureFloatLinear> m_oesTextureFloatLinear;
   Member<WebGLCompressedTextureASTC> m_webglCompressedTextureASTC;
   Member<WebGLCompressedTextureATC> m_webglCompressedTextureATC;
   Member<WebGLCompressedTextureETC> m_webglCompressedTextureETC;
   Member<WebGLCompressedTextureETC1> m_webglCompressedTextureETC1;
   Member<WebGLCompressedTexturePVRTC> m_webglCompressedTexturePVRTC;
   Member<WebGLCompressedTextureS3TC> m_webglCompressedTextureS3TC;
   Member<WebGLCompressedTextureS3TCsRGB> m_webglCompressedTextureS3TCsRGB;
   Member<WebGLDebugRendererInfo> m_webglDebugRendererInfo;
   Member<WebGLDebugShaders> m_webglDebugShaders;
   Member<WebGLLoseContext> m_webglLoseContext;
 };
 
 DEFINE_TYPE_CASTS(WebGL2RenderingContext,
                   CanvasRenderingContext,
                   context,
                   context->is3d() &&
                       WebGLRenderingContextBase::getWebGLVersion(context) == 2,
                   context.is3d() &&
                       WebGLRenderingContextBase::getWebGLVersion(&context) ==
                           2);
 
 }  // namespace blink
 
 #endif