Add use counters for lots of DOM APIs.

third_party/WebKit/Source/core/dom/GlobalEventHandlers.idl

Index: third_party/WebKit/Source/core/dom/GlobalEventHandlers.idl
diff --git a/third_party/WebKit/Source/core/dom/GlobalEventHandlers.idl b/third_party/WebKit/Source/core/dom/GlobalEventHandlers.idl
index de33f3c341ff2ca7caa22fc7d35f7d8a2c329834..2272572f5fc159a28f680837f173a1854da18d9c 100644
--- a/third_party/WebKit/Source/core/dom/GlobalEventHandlers.idl
+++ b/third_party/WebKit/Source/core/dom/GlobalEventHandlers.idl
@@ -33,68 +33,68 @@
     LegacyTreatAsPartialInterface,
     NoInterfaceObject, // Always used on target of 'implements'
 ] interface GlobalEventHandlers {
-    attribute EventHandler onabort;
-    attribute EventHandler onblur;
-    attribute EventHandler oncancel;
-    attribute EventHandler oncanplay;
-    attribute EventHandler oncanplaythrough;
-    attribute EventHandler onchange;
-    attribute EventHandler onclick;
-    attribute EventHandler onclose;
-    attribute EventHandler oncontextmenu;
-    attribute EventHandler oncuechange;
-    attribute EventHandler ondblclick;
-    attribute EventHandler ondrag;
-    attribute EventHandler ondragend;
-    attribute EventHandler ondragenter;
+    [Measure] attribute EventHandler onabort;
+    [Measure] attribute EventHandler onblur;
+    [Measure] attribute EventHandler oncancel;
+    [Measure] attribute EventHandler oncanplay;
+    [Measure] attribute EventHandler oncanplaythrough;
+    [Measure] attribute EventHandler onchange;
+    [Measure] attribute EventHandler onclick;
+    [Measure] attribute EventHandler onclose;
+    [Measure] attribute EventHandler oncontextmenu;
+    [Measure] attribute EventHandler oncuechange;
+    [Measure] attribute EventHandler ondblclick;
+    [Measure] attribute EventHandler ondrag;
+    [Measure] attribute EventHandler ondragend;
+    [Measure] attribute EventHandler ondragenter;
     //attribute EventHandler ondragexit;
-    attribute EventHandler ondragleave;
-    attribute EventHandler ondragover;
-    attribute EventHandler ondragstart;
-    attribute EventHandler ondrop;
-    attribute EventHandler ondurationchange;
-    attribute EventHandler onemptied;
-    attribute EventHandler onended;
+    [Measure] attribute EventHandler ondragleave;
+    [Measure] attribute EventHandler ondragover;
+    [Measure] attribute EventHandler ondragstart;
+    [Measure] attribute EventHandler ondrop;
+    [Measure] attribute EventHandler ondurationchange;
+    [Measure] attribute EventHandler onemptied;
+    [Measure] attribute EventHandler onended;
     // FIXME: onerror should be an OnErrorEventHandler.
-    attribute EventHandler onerror;
-    attribute EventHandler onfocus;
-    attribute EventHandler oninput;
-    attribute EventHandler oninvalid;
-    attribute EventHandler onkeydown;
-    attribute EventHandler onkeypress;
-    attribute EventHandler onkeyup;
-    attribute EventHandler onload;
-    attribute EventHandler onloadeddata;
-    attribute EventHandler onloadedmetadata;
-    attribute EventHandler onloadstart;
-    attribute EventHandler onmousedown;
-    [LenientThis] attribute EventHandler onmouseenter;
-    [LenientThis] attribute EventHandler onmouseleave;
-    attribute EventHandler onmousemove;
-    attribute EventHandler onmouseout;
-    attribute EventHandler onmouseover;
-    attribute EventHandler onmouseup;
-    attribute EventHandler onmousewheel;
-    attribute EventHandler onpause;
-    attribute EventHandler onplay;
-    attribute EventHandler onplaying;
-    attribute EventHandler onprogress;
-    attribute EventHandler onratechange;
-    attribute EventHandler onreset;
-    attribute EventHandler onresize;
-    attribute EventHandler onscroll;
-    attribute EventHandler onseeked;
-    attribute EventHandler onseeking;
-    attribute EventHandler onselect;
-    attribute EventHandler onshow;
+    [Measure] attribute EventHandler onerror;
+    [Measure] attribute EventHandler onfocus;
+    [Measure] attribute EventHandler oninput;
+    [Measure] attribute EventHandler oninvalid;
+    [Measure] attribute EventHandler onkeydown;
+    [Measure] attribute EventHandler onkeypress;
+    [Measure] attribute EventHandler onkeyup;
+    [Measure] attribute EventHandler onload;
+    [Measure] attribute EventHandler onloadeddata;
+    [Measure] attribute EventHandler onloadedmetadata;
+    [Measure] attribute EventHandler onloadstart;
+    [Measure] attribute EventHandler onmousedown;
+    [LenientThis, Measure] attribute EventHandler onmouseenter;
+    [LenientThis, Measure] attribute EventHandler onmouseleave;
+    [Measure] attribute EventHandler onmousemove;
+    [Measure] attribute EventHandler onmouseout;
+    [Measure] attribute EventHandler onmouseover;
+    [Measure] attribute EventHandler onmouseup;
+    [Measure] attribute EventHandler onmousewheel;
+    [Measure] attribute EventHandler onpause;
+    [Measure] attribute EventHandler onplay;
+    [Measure] attribute EventHandler onplaying;
+    [Measure] attribute EventHandler onprogress;
+    [Measure] attribute EventHandler onratechange;
+    [Measure] attribute EventHandler onreset;
+    [Measure] attribute EventHandler onresize;
+    [Measure] attribute EventHandler onscroll;
+    [Measure] attribute EventHandler onseeked;
+    [Measure] attribute EventHandler onseeking;
+    [Measure] attribute EventHandler onselect;
+    [Measure] attribute EventHandler onshow;
     //attribute EventHandler onsort;
-    attribute EventHandler onstalled;
-    attribute EventHandler onsubmit;
-    attribute EventHandler onsuspend;
-    attribute EventHandler ontimeupdate;
-    attribute EventHandler ontoggle;
-    attribute EventHandler onvolumechange;
-    attribute EventHandler onwaiting;
+    [Measure] attribute EventHandler onstalled;
+    [Measure] attribute EventHandler onsubmit;
+    [Measure] attribute EventHandler onsuspend;
+    [Measure] attribute EventHandler ontimeupdate;
+    [Measure] attribute EventHandler ontoggle;
+    [Measure] attribute EventHandler onvolumechange;
+    [Measure] attribute EventHandler onwaiting;
 
     // auxclick
     // https://navidz.github.io/auxclick/
@@ -102,19 +102,19 @@
 
     // Pointer Events
     // https://w3c.github.io/pointerevents/#extensions-to-the-globaleventhandlers-interface
-    [RuntimeEnabled=PointerEvent] attribute EventHandler onpointerdown;
-    [RuntimeEnabled=PointerEvent] attribute EventHandler onpointermove;
-    [RuntimeEnabled=PointerEvent] attribute EventHandler onpointerup;
-    [RuntimeEnabled=PointerEvent] attribute EventHandler onpointercancel;
-    [RuntimeEnabled=PointerEvent] attribute EventHandler onpointerover;
-    [RuntimeEnabled=PointerEvent] attribute EventHandler onpointerout;
-    [RuntimeEnabled=PointerEvent] attribute EventHandler onpointerenter;
-    [RuntimeEnabled=PointerEvent] attribute EventHandler onpointerleave;
+    [RuntimeEnabled=PointerEvent, Measure] attribute EventHandler onpointerdown;
+    [RuntimeEnabled=PointerEvent, Measure] attribute EventHandler onpointermove;
+    [RuntimeEnabled=PointerEvent, Measure] attribute EventHandler onpointerup;
+    [RuntimeEnabled=PointerEvent, Measure] attribute EventHandler onpointercancel;
+    [RuntimeEnabled=PointerEvent, Measure] attribute EventHandler onpointerover;
+    [RuntimeEnabled=PointerEvent, Measure] attribute EventHandler onpointerout;
+    [RuntimeEnabled=PointerEvent, Measure] attribute EventHandler onpointerenter;
+    [RuntimeEnabled=PointerEvent, Measure] attribute EventHandler onpointerleave;
 
     // Touch Events
     // https://w3c.github.io/touch-events/#extensions-to-the-globaleventhandlers-interface
-    [RuntimeEnabled=TouchEventFeatureDetection] attribute EventHandler ontouchcancel;
-    [RuntimeEnabled=TouchEventFeatureDetection] attribute EventHandler ontouchend;
-    [RuntimeEnabled=TouchEventFeatureDetection] attribute EventHandler ontouchmove;
-    [RuntimeEnabled=TouchEventFeatureDetection] attribute EventHandler ontouchstart;
+    [Measure, RuntimeEnabled=TouchEventFeatureDetection] attribute EventHandler ontouchcancel;
+    [Measure, RuntimeEnabled=TouchEventFeatureDetection] attribute EventHandler ontouchend;
+    [Measure, RuntimeEnabled=TouchEventFeatureDetection] attribute EventHandler ontouchmove;
+    [Measure, RuntimeEnabled=TouchEventFeatureDetection] attribute EventHandler ontouchstart;
 };