Reorganize members of window.idl and worker_global_scope.idl

- Consolidate 'origin' and 'queueMicrotask'
- Move 'customElements' to the top section
- Move requestAnimationFrame() and cancelAnimationFrame() to their own section
- Move requestIdleCCallback() and cacelIdleCallback() to their own section
- Update comments

This CL has no behavior changes.

Change-Id: I4472c1582933a53703510ab33d35f4f1a0824541
Reviewed-on: https://chromium-review.googlesource.com/1256391Reviewed-by: Fergal Daly <fergal@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595792}

third_party/blink/renderer/core/frame/window.idl

@@ -37,9 +37,9 @@
     [Affects=Nothing, Unforgeable, CrossOrigin] readonly attribute Window window;
     [Replaceable, CrossOrigin] readonly attribute Window self;
     [Affects=Nothing, Unforgeable, CachedAccessor] readonly attribute Document document;
-    [Replaceable] readonly attribute DOMString origin;
     attribute DOMString name;
     [Affects=Nothing, PutForwards=href, Unforgeable, CrossOrigin=(Getter,Setter), Custom=Getter] readonly attribute Location location;
+    [CallWith=ScriptState] readonly attribute CustomElementRegistry customElements;
     [Affects=Nothing] readonly attribute History history;
     [Replaceable, MeasureAs=BarPropLocationbar] readonly attribute BarProp locationbar;
     [Replaceable, MeasureAs=BarPropMenubar] readonly attribute BarProp menubar;
@@ -94,22 +94,19 @@
     [Measure, CallWith=ScriptState] DOMString? prompt(optional DOMString message = "", optional DOMString defaultValue = "");
     [Measure, CallWith=ScriptState] void print();
 
-    [MeasureAs=UnprefixedRequestAnimationFrame] long requestAnimationFrame(FrameRequestCallback callback);
-    void cancelAnimationFrame(long handle);
-
-    [Measure] long requestIdleCallback(IdleRequestCallback callback, optional IdleRequestOptions options);
-    void cancelIdleCallback(long handle);
-
     [CrossOrigin, CallWith=CurrentWindow, RaisesException] void postMessage(any message, USVString targetOrigin, optional sequence<object> transfer = []);
 
     [CrossOrigin, CallWith=CurrentWindow, RaisesException, RuntimeEnabled=PostMessageOptions] void postMessage(any message, optional WindowPostMessageOptions options);
 
+    // WindowOrWorkerGlobalScope mixin
     // https://html.spec.whatwg.org/#windoworworkerglobalscope-mixin
+    [Replaceable] readonly attribute DOMString origin;
     void queueMicrotask(VoidFunction callback);
 
-    // Custom elements
-    // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-api
-    [CallWith=ScriptState] readonly attribute CustomElementRegistry customElements;
+    // AnimationFrameProvider mixin
+    // https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html#animation-frames
+    [MeasureAs=UnprefixedRequestAnimationFrame] long requestAnimationFrame(FrameRequestCallback callback);
+    void cancelAnimationFrame(long handle);
 
     // HTML obsolete features
     // https://html.spec.whatwg.org/#Window-partial
@@ -118,6 +115,11 @@
 
     [Replaceable, SameObject] readonly attribute External external;
 
+    // Cooperative Scheduling of Background Tasks
+    // https://www.w3.org/TR/requestidlecallback/#window_extensions
+    [Measure] long requestIdleCallback(IdleRequestCallback callback, optional IdleRequestOptions options);
+    void cancelIdleCallback(long handle);
+
     // CSS Object Model (CSSOM)
     // https://drafts.csswg.org/cssom/#extensions-to-the-window-interface
     [Affects=Nothing, NewObject] CSSStyleDeclaration getComputedStyle(Element elt, optional DOMString? pseudoElt);

third_party/blink/renderer/core/workers/worker_global_scope.idl

@@ -63,17 +63,20 @@
     // https://w3c.github.io/webappsec-secure-contexts/#dom-windoworworkerglobalscope-issecurecontext
     [ImplementedAs=isSecureContextForBindings] readonly attribute boolean isSecureContext;
 
+    // WindowOrWorkerGlobalScope mixin
     // https://html.spec.whatwg.org/#windoworworkerglobalscope-mixin
     [Replaceable] readonly attribute DOMString origin;
-
-    // https://html.spec.whatwg.org/#windoworworkerglobalscope-mixin
     void queueMicrotask(VoidFunction callback);
 
-    // TODO(fserb): temporarly until we can enable the interface below.
-    [RuntimeEnabled=OffscreenCanvasText] readonly attribute FontFaceSet fonts;
-
+    // AnimationFrameProvider mixin
+    // https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html#animation-frames
     [RuntimeEnabled=OffscreenCanvas, RaisesException] long requestAnimationFrame(FrameRequestCallback callback);
     [RuntimeEnabled=OffscreenCanvas] void cancelAnimationFrame(long handle);
+
+    // FontFaceSource
+    // https://drafts.csswg.org/css-font-loading-3/#font-face-source
+    // TODO(fserb): temporarly until we can enable the interface below.
+    [RuntimeEnabled=OffscreenCanvasText] readonly attribute FontFaceSet fonts;
 };
 
 WorkerGlobalScope implements WindowBase64;