Split out ImageBitmapRenderingContext feature (#3166)

ChromeStatus entries for this:
https://chromestatus.com/feature/5709799995998208
https://chromestatus.com/feature/5700221617045504

https://wiki.whatwg.org/wiki/OffscreenCanvas has background on how this
feature came to be as part of the OffscreenCanvas effort.

Author: foolip

features/createimagebitmap.yml

@@ -19,6 +19,3 @@ compat_features:
   - api.ImageBitmap.close
   - api.ImageBitmap.height
   - api.ImageBitmap.width
-  - api.ImageBitmapRenderingContext
-  - api.ImageBitmapRenderingContext.canvas
-  - api.ImageBitmapRenderingContext.transferFromImageBitmap

features/createimagebitmap.yml.dist

@@ -14,32 +14,6 @@ status:
     safari: "15"
     safari_ios: "15"
 compat_features:
-  # baseline: high
-  # baseline_low_date: 2020-01-15
-  # baseline_high_date: 2022-07-15
-  # support:
-  #   chrome: "66"
-  #   chrome_android: "66"
-  #   edge: "79"
-  #   firefox: "46"
-  #   firefox_android: "46"
-  #   safari: "11.1"
-  #   safari_ios: "11.3"
-  - api.ImageBitmapRenderingContext
-
-  # baseline: high
-  # baseline_low_date: 2020-01-15
-  # baseline_high_date: 2022-07-15
-  # support:
-  #   chrome: "66"
-  #   chrome_android: "66"
-  #   edge: "79"
-  #   firefox: "50"
-  #   firefox_android: "50"
-  #   safari: "11.1"
-  #   safari_ios: "11.3"
-  - api.ImageBitmapRenderingContext.transferFromImageBitmap
-
   # ⬇️ Same status as overall feature ⬇️
   # baseline: high
   # baseline_low_date: 2021-09-20
@@ -83,19 +57,6 @@ compat_features:
   #   safari_ios: "15"
   - api.createImageBitmap.options_imageOrientation_parameter
 
-  # baseline: high
-  # baseline_low_date: 2022-02-08
-  # baseline_high_date: 2024-08-08
-  # support:
-  #   chrome: "66"
-  #   chrome_android: "66"
-  #   edge: "79"
-  #   firefox: "97"
-  #   firefox_android: "97"
-  #   safari: "11.1"
-  #   safari_ios: "11.3"
-  - api.ImageBitmapRenderingContext.canvas
-
   # baseline: high
   # baseline_low_date: 2022-03-08
   # baseline_high_date: 2024-09-08

features/imagebitmaprenderingcontext.yml

@@ -0,0 +1,13 @@
+name: ImageBitmapRenderingContext
+description: The `ImageBitmapRenderingContext` API is the `"bitmaprenderer"` rendering context for the `<canvas>` element. It is commonly used to transfer frames from an `OffscreenCanvas` to a user-visible `<canvas>` element.
+spec: https://html.spec.whatwg.org/multipage/canvas.html#the-imagebitmaprenderingcontext-interface
+status:
+  compute_from:
+    - api.HTMLCanvasElement.getContext.bitmaprenderer_context
+    - api.ImageBitmapRenderingContext.transferFromImageBitmap
+compat_features:
+  - api.HTMLCanvasElement.getContext.bitmaprenderer_context
+  - api.HTMLCanvasElement.getContext.bitmaprenderer_context.options_alpha_parameter
+  - api.ImageBitmapRenderingContext
+  - api.ImageBitmapRenderingContext.canvas
+  - api.ImageBitmapRenderingContext.transferFromImageBitmap

features/imagebitmaprenderingcontext.yml.dist

@@ -0,0 +1,65 @@
+# Generated from: imagebitmaprenderingcontext.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: high
+  baseline_low_date: 2020-01-15
+  baseline_high_date: 2022-07-15
+  support:
+    chrome: "66"
+    chrome_android: "66"
+    edge: "79"
+    firefox: "50"
+    firefox_android: "50"
+    safari: "11.1"
+    safari_ios: "11.3"
+compat_features:
+  # baseline: high
+  # baseline_low_date: 2020-01-15
+  # baseline_high_date: 2022-07-15
+  # support:
+  #   chrome: "66"
+  #   chrome_android: "66"
+  #   edge: "79"
+  #   firefox: "46"
+  #   firefox_android: "46"
+  #   safari: "11.1"
+  #   safari_ios: "11.3"
+  - api.HTMLCanvasElement.getContext.bitmaprenderer_context
+  - api.ImageBitmapRenderingContext
+
+  # ⬇️ Same status as overall feature ⬇️
+  # baseline: high
+  # baseline_low_date: 2020-01-15
+  # baseline_high_date: 2022-07-15
+  # support:
+  #   chrome: "66"
+  #   chrome_android: "66"
+  #   edge: "79"
+  #   firefox: "50"
+  #   firefox_android: "50"
+  #   safari: "11.1"
+  #   safari_ios: "11.3"
+  - api.ImageBitmapRenderingContext.transferFromImageBitmap
+
+  # baseline: high
+  # baseline_low_date: 2022-02-08
+  # baseline_high_date: 2024-08-08
+  # support:
+  #   chrome: "66"
+  #   chrome_android: "66"
+  #   edge: "79"
+  #   firefox: "97"
+  #   firefox_android: "97"
+  #   safari: "11.1"
+  #   safari_ios: "11.3"
+  - api.ImageBitmapRenderingContext.canvas
+
+  # baseline: false
+  # support:
+  #   chrome: "66"
+  #   chrome_android: "66"
+  #   edge: "79"
+  #   safari: "11.1"
+  #   safari_ios: "11.3"
+  - api.HTMLCanvasElement.getContext.bitmaprenderer_context.options_alpha_parameter