[web-animations-1] Fix whitespace in Web Animations IDL

Apparently the space before the '(' in methods is weird. I notice the
WebIDL spec doesn't ever do that.

Also, the WebIDL spec tends to but a space before and after the { } when
defining an enum whereas Web Animations sometimes does, sometimes
doesn't. This patch makes that more consistent.

Author: birtles

web-animations-1/Overview.bs

@@ -3959,7 +3959,7 @@ dictionary DocumentTimelineOptions {
 };
 
 [Exposed=Window,
- Constructor (optional DocumentTimelineOptions options)]
+ Constructor(optional DocumentTimelineOptions options)]
 interface DocumentTimeline : AnimationTimeline {
 };
 </pre>
@@ -4002,8 +4002,8 @@ API by the {{Animation}} interface.
 
 <pre class='idl'>
 [Exposed=Window,
- Constructor (optional AnimationEffect? effect = null,
-              optional AnimationTimeline? timeline)]
+ Constructor(optional AnimationEffect? effect = null,
+             optional AnimationTimeline? timeline)]
 interface Animation : EventTarget {
              attribute DOMString                id;
              attribute AnimationEffect?         effect;
@@ -4019,14 +4019,14 @@ interface Animation : EventTarget {
              attribute EventHandler             onfinish;
              attribute EventHandler             oncancel;
              attribute EventHandler             onremove;
-    void cancel ();
-    void finish ();
-    void play ();
-    void pause ();
-    void updatePlaybackRate (double playbackRate);
-    void reverse ();
-    void persist ();
-    void commitStyles ();
+    void cancel();
+    void finish();
+    void play();
+    void pause();
+    void updatePlaybackRate(double playbackRate);
+    void reverse();
+    void persist();
+    void commitStyles();
 };
 </pre>
 
@@ -4694,16 +4694,16 @@ dictionary ComputedEffectTiming : EffectTiming {
 
 <pre class='idl'>
 [Exposed=Window,
- Constructor ((Element or CSSPseudoElement)? target,
-              object? keyframes,
-              optional (unrestricted double or KeyframeEffectOptions) options),
- Constructor (KeyframeEffect source)]
+ Constructor((Element or CSSPseudoElement)? target,
+             object? keyframes,
+             optional (unrestricted double or KeyframeEffectOptions) options),
+ Constructor(KeyframeEffect source)]
 interface KeyframeEffect : AnimationEffect {
     attribute (Element or CSSPseudoElement)? target;
     attribute IterationCompositeOperation    iterationComposite;
     attribute CompositeOperation             composite;
-    sequence&lt;object&gt; getKeyframes ();
-    void             setKeyframes (object? keyframes);
+    sequence&lt;object&gt; getKeyframes();
+    void             setKeyframes(object? keyframes);
 };
 </pre>
 
@@ -5647,7 +5647,7 @@ The possible values of an <a>animation effect</a>'s
 <dfn>IterationCompositeOperation</dfn> enumeration.
 
 <pre class='idl'>
-enum IterationCompositeOperation {"replace", "accumulate"};
+enum IterationCompositeOperation { "replace", "accumulate" };
 </pre>
 
 :   <code>replace</code>
@@ -5670,7 +5670,7 @@ composition behavior are represented by the
 <dfn>CompositeOperation</dfn> enumeration.
 
 <pre class='idl'>
-enum CompositeOperation {"replace", "add", "accumulate"};
+enum CompositeOperation { "replace", "add", "accumulate" };
 </pre>
 
 :   <dfn enum-value for="CompositeOperation,CompositeOperationOrAuto">replace</dfn>
@@ -5701,7 +5701,7 @@ values as the {{CompositeOperation}} enumeration along with the additional
 {{CompositeOperationOrAuto/auto}} value.
 
 <pre class='idl'>
-enum CompositeOperationOrAuto {"replace", "add", "accumulate", "auto"};
+enum CompositeOperationOrAuto { "replace", "add", "accumulate", "auto" };
 </pre>
 
 :   <dfn enum-value for=CompositeOperationOrAuto>auto</dfn>
@@ -5715,17 +5715,17 @@ the {{Animatable}} interface mixin.
 
 <pre class='idl'>
 interface mixin Animatable {
-    Animation           animate (object? keyframes,
-                                 optional (unrestricted double or KeyframeAnimationOptions) options);
-    sequence&lt;Animation&gt; getAnimations (optional GetAnimationsOptions options);
+    Animation           animate(object? keyframes,
+                                optional (unrestricted double or KeyframeAnimationOptions) options);
+    sequence&lt;Animation&gt; getAnimations(optional GetAnimationsOptions options);
 };
 
 dictionary KeyframeAnimationOptions : KeyframeEffectOptions {
     DOMString id = "";
 };
 
 dictionary GetAnimationsOptions {
-  boolean subtree = false;
+    boolean subtree = false;
 };
 </pre>
 
@@ -5919,7 +5919,7 @@ CSSPseudoElement includes Animatable;
 
 <pre class='idl'>
 [Exposed=Window,
- Constructor (DOMString type, optional AnimationPlaybackEventInit eventInitDict)]
+ Constructor(DOMString type, optional AnimationPlaybackEventInit eventInitDict)]
 interface AnimationPlaybackEvent : Event {
     readonly attribute double? currentTime;
     readonly attribute double? timelineTime;