Implement canvas color space IDL format for 2D canvas

third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.h

Index: third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.h
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.h b/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.h
index a7bc7ddc4e97f4540a43c2514e2bf9ab22cd826b..6186c7fb4f96970c7bfb35630ae4827bcae6c621 100644
--- a/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.h
+++ b/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.h
@@ -50,11 +50,17 @@ class WebLayer;
 enum CanvasColorSpace {
   kLegacyCanvasColorSpace,
   kSRGBCanvasColorSpace,
-  kLinearRGBCanvasColorSpace,
   kRec2020CanvasColorSpace,
   kP3CanvasColorSpace,
 };
 
+enum CanvasPixelFormat {
+  kRGBA8CanvasPixelFormat,
+  kRGB10A2CanvasPixelFormat,
+  kRGBA12CanvasPixelFormat,
+  kF16CanvasPixelFormat,
+};
+
 class CORE_EXPORT CanvasRenderingContext
     : public GarbageCollectedFinalized<CanvasRenderingContext>,
       public ScriptWrappable,
@@ -88,6 +94,10 @@ class CORE_EXPORT CanvasRenderingContext
 
   CanvasColorSpace colorSpace() const { return m_colorSpace; };
   WTF::String colorSpaceAsString() const;
+  CanvasPixelFormat pixelFormat() const { return m_pixelFormat; };
+  WTF::String pixelFormatAsString() const;
+  bool linearPixelMath() const { return m_linearPixelMath; };
+
   // The color space in which the the content should be interpreted by the
   // compositor. This is always defined.
   gfx::ColorSpace gfxColorSpace() const;
@@ -209,6 +219,8 @@ class CORE_EXPORT CanvasRenderingContext
   HashSet<String> m_cleanURLs;
   HashSet<String> m_dirtyURLs;
   CanvasColorSpace m_colorSpace;
+  CanvasPixelFormat m_pixelFormat;
+  bool m_linearPixelMath = false;
   CanvasContextCreationAttributes m_creationAttributes;
   bool m_finalizeFrameScheduled = false;
 };