Reland Submit Compositor Frame from OffscreenCanvas on main

third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h

 // Copyright 2016 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 OffscreenCanvasRenderingContext2D_h
 #define OffscreenCanvasRenderingContext2D_h
 
 #include "core/html/canvas/CanvasContextCreationAttributes.h"
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/html/canvas/CanvasRenderingContextFactory.h"
@@ skipping 15 matching lines @@
         {
             return new OffscreenCanvasRenderingContext2D(scriptState, canvas, attrs);
         }
 
         CanvasRenderingContext::ContextType getContextType() const override
         {
             return CanvasRenderingContext::Context2d;
         }
     };
 
+    void commit(ExecutionContext*);
+
     // CanvasRenderingContext implementation
     ~OffscreenCanvasRenderingContext2D() override;
     ContextType getContextType() const override { return Context2d; }
     bool is2d() const override { return true; }
     void setOffscreenCanvasGetContextResult(OffscreenRenderingContext&) final;
     void setIsHidden(bool) final { ASSERT_NOT_REACHED(); }
     void stop() final { ASSERT_NOT_REACHED(); }
     void setCanvasGetContextResult(RenderingContext&) final {}
     void clearRect(double x, double y, double width, double height) override { BaseRenderingContext2D::clearRect(x, y, width, height); }
     PassRefPtr<Image> getImage(SnapshotReason) const final;
@@ skipping 40 matching lines @@
     bool isPaintable() const final;
 };
 
 DEFINE_TYPE_CASTS(OffscreenCanvasRenderingContext2D, CanvasRenderingContext, context,
     context->is2d() && context->getOffscreenCanvas(),
     context.is2d() && context.getOffscreenCanvas());
 
 } // namespace blink
 
 #endif // OffscreenCanvasRenderingContext2D_h