Revert of Implement color management for ImageData

third_party/WebKit/Source/core/html/ImageData.idl

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 // https://html.spec.whatwg.org/#dom-imagedata
-// https://github.com/junov/CanvasColorSpace/blob/master/CanvasColorSpaceProposal.md#imagedata
-
-enum ImageDataColorSpace { "legacy-srgb", "srgb", "linear-rgb" };
 
 [
     Constructor(unsigned long sw, unsigned long sh),
     Constructor(Uint8ClampedArray data, unsigned long sw, optional unsigned long sh),
     Exposed=(Window,Worker),
     RaisesException=Constructor,
 ] interface ImageData {
-
-    [RuntimeEnabled=ExperimentalCanvasFeatures, RaisesException] ImageData createImageData(unsigned long sw, unsigned long sh, ImageDataColorSpace colorSpace);
-    [RuntimeEnabled=ExperimentalCanvasFeatures, RaisesException] ImageData createImageData(Uint8ClampedArray data, unsigned long sw, ImageDataColorSpace colorSpace);
-    [RuntimeEnabled=ExperimentalCanvasFeatures, RaisesException] ImageData createImageData(Uint8ClampedArray data, unsigned long sw, unsigned long sh, ImageDataColorSpace colorSpace);
-
     readonly attribute unsigned long width;
     readonly attribute unsigned long height;
-    readonly attribute Uint8ClampedArray data;
-    readonly attribute ImageDataColorSpace colorSpace;
+    // TODO(foolip): Expose data.
+    // readonly attribute Uint8ClampedArray data;
 };