Canvas2D on WebGL texture

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

Index: third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h
diff --git a/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h b/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h
index 23a04d958e3543112f4c5b8ce69e2e801acb4e59..8c768cbf4604dc80cc12b5b61252bbd28f145fd8 100644
--- a/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h
+++ b/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h
@@ -5,11 +5,12 @@
 #ifndef OffscreenCanvasRenderingContext2D_h
 #define OffscreenCanvasRenderingContext2D_h
 
+#include <memory>
 #include "core/html/canvas/CanvasContextCreationAttributes.h"
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/html/canvas/CanvasRenderingContextFactory.h"
 #include "modules/canvas2d/BaseRenderingContext2D.h"
-#include <memory>
+#include "modules/webgl/WebGLTexture.h"
 
 namespace blink {
 
@@ -74,6 +75,8 @@ class MODULES_EXPORT OffscreenCanvasRenderingContext2D final
   bool HasImageBuffer() const final;
   ImageBuffer* GetImageBuffer() const final;
 
+  ImageBuffer* CreateTextureImageBuffer();
+
   bool ParseColorOrCurrentColor(Color&, const String& color_string) const final;
 
   PaintCanvas* DrawingCanvas() const final;
@@ -117,6 +120,9 @@ class MODULES_EXPORT OffscreenCanvasRenderingContext2D final
   CanvasColorSpace ColorSpace() const override;
   String ColorSpaceAsString() const override;
   CanvasPixelFormat PixelFormat() const override;
+
+  Member<WebGLTexture> webgl_texture_;
+  std::unique_ptr<ImageBuffer> texture_image_buffer_;
 };
 
 DEFINE_TYPE_CASTS(OffscreenCanvasRenderingContext2D,