Make OffscreenCanvas a member of CanvasImageSource

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

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 393 matching lines @@
         DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
     public:
         Member<WebGLTexture> m_texture2DBinding;
         Member<WebGLTexture> m_textureCubeMapBinding;
         Member<WebGLTexture> m_texture3DBinding;
         Member<WebGLTexture> m_texture2DArrayBinding;
 
         DECLARE_TRACE();
     };
 
+    PassRefPtr<Image> getImage(SnapshotReason) const override;
     void setFilterQuality(SkFilterQuality) override;
     bool isWebGL2OrHigher() { return version() >= 2; }
 
     void getHTMLOrOffscreenCanvas(HTMLCanvasElementOrOffscreenCanvas&) const;
 
 protected:
     friend class EXTDisjointTimerQuery;
     friend class WebGLDrawBuffers;
     friend class WebGLFramebuffer;
     friend class WebGLObject;
@@ skipping 605 matching lines @@
     String ensureNotNull(const String&) const;
 
     // Enable or disable stencil test based on user setting and
     // whether the current FBO has a stencil buffer.
     void applyStencilTest();
 
     // Helper for enabling or disabling a capability.
     void enableOrDisable(GLenum capability, bool enable);
 
     // Clamp the width and height to GL_MAX_VIEWPORT_DIMS.
-    IntSize clampedCanvasSize();
+    IntSize clampedCanvasSize() const;
 
     // First time called, if EXT_draw_buffers is supported, query the value; otherwise return 0.
     // Later, return the cached value.
     GLint maxDrawBuffers();
     GLint maxColorAttachments();
 
     void setBackDrawBuffer(GLenum);
     void setFramebuffer(GLenum, WebGLFramebuffer*);
 
     virtual void restoreCurrentFramebuffer();
@@ skipping 71 matching lines @@
     bool isPaintable() const final { return drawingBuffer(); }
 };
 
 DEFINE_TYPE_CASTS(WebGLRenderingContextBase, CanvasRenderingContext, context, context->is3d(), context.is3d());
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::WebGLRenderingContextBase::TextureUnitState);
 
 #endif // WebGLRenderingContextBase_h