Fix BaseRenderingContext2D create/put/get-ImageData() for color managed canvas

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 440d987c2a52d4005ae63923da744ad6abec61be..7471922b8a9fd3b0543639b3c0450a7b1212df29 100644
--- a/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h
+++ b/third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h
@@ -91,6 +91,18 @@ class MODULES_EXPORT OffscreenCanvasRenderingContext2D final
 
   ColorBehavior DrawImageColorBehavior() const final;
 
+  ImageData* createImageData(ImageData*, ExceptionState&) const;
+  ImageData* createImageData(int, int, ExceptionState&) const;
+  ImageData* createImageData(unsigned,
+                             unsigned,
+                             ImageDataColorSettings&,
+                             ExceptionState&) const;
+  ImageData* createImageData(ImageDataArray&,
+                             unsigned,
+                             unsigned,
+                             ImageDataColorSettings&,
+                             ExceptionState&) const;
+
  protected:
   OffscreenCanvasRenderingContext2D(
       ScriptState*,
@@ -109,6 +121,10 @@ class MODULES_EXPORT OffscreenCanvasRenderingContext2D final
   bool IsPaintable() const final;
 
   RefPtr<StaticBitmapImage> TransferToStaticBitmapImage();
+
+  CanvasColorSpace ColorSpace() const override;
+  String ColorSpaceAsString() const override;
+  CanvasPixelFormat PixelFormat() const override;
 };
 
 DEFINE_TYPE_CASTS(OffscreenCanvasRenderingContext2D,