Introduce PaintWorkletGlobalScope, rename renderWorklet attribute to paintWorklet.

third_party/WebKit/Source/modules/csspaint/PaintWorkletGlobalScope.idl

Index: third_party/WebKit/Source/modules/csspaint/PaintWorkletGlobalScope.idl
diff --git a/third_party/WebKit/Source/modules/worklet/WorkletGlobalScope.idl b/third_party/WebKit/Source/modules/csspaint/PaintWorkletGlobalScope.idl
similarity index 42%
copy from third_party/WebKit/Source/modules/worklet/WorkletGlobalScope.idl
copy to third_party/WebKit/Source/modules/csspaint/PaintWorkletGlobalScope.idl
index de3c347077d1cb3a25af7ebe3dee8fee2672e001..0473ce60cf2aa15f28d8d12ab98ad50ed378130c 100644
--- a/third_party/WebKit/Source/modules/worklet/WorkletGlobalScope.idl
+++ b/third_party/WebKit/Source/modules/csspaint/PaintWorkletGlobalScope.idl
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// https://drafts.css-houdini.org/worklets/#workletglobalscope
+// https://drafts.css-houdini.org/css-paint-api/#paintworkletglobalscope
 
 [
-    Exposed=Worklet,
-    Global=Worklet,
-    RuntimeEnabled=Worklet,
+    Exposed=PaintWorklet,
+    Global=PaintWorklet,
+    RuntimeEnabled=CSSPaintAPI,
     WillBeGarbageCollected,
-] interface WorkletGlobalScope {
-    [Replaceable] readonly attribute WorkletConsole console;
+] interface PaintWorkletGlobalScope : WorkletGlobalScope {
+    void registerPaint(DOMString name, Function paintCtor);
 };