Add use counters for lots of DOM APIs.

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

Index: third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl
diff --git a/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl b/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl
index a67878b1b25daa4af41f1e6ae06e6680ac68ab8c..c4ec8cf3b05b61955187c6569b329b3dbe84e904 100644
--- a/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl
+++ b/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl
@@ -12,8 +12,8 @@
     // FIXME: Exposed=(Window,Worker)
     RuntimeEnabled=GeometryInterfaces,
 ] interface DOMMatrixReadOnly {
-    [RaisesException, NewObject] static DOMMatrixReadOnly fromFloat32Array(Float32Array array32);
-    [RaisesException, NewObject] static DOMMatrixReadOnly fromFloat64Array(Float64Array array64);
+    [RaisesException, NewObject, Measure] static DOMMatrixReadOnly fromFloat32Array(Float32Array array32);
+    [RaisesException, NewObject, Measure] static DOMMatrixReadOnly fromFloat64Array(Float64Array array64);
     [RaisesException, NewObject] static DOMMatrixReadOnly fromMatrix(optional DOMMatrixInit other);
 
     // These attributes are simple aliases for certain elements of the 4x4 matrix
@@ -75,10 +75,10 @@
     DOMMatrix flipY();
     DOMMatrix inverse();
 
-    DOMPoint transformPoint(optional DOMPointInit point);
+    [Measure] DOMPoint transformPoint(optional DOMPointInit point);
 
-    Float32Array toFloat32Array();
-    Float64Array toFloat64Array();
+    [Measure] Float32Array toFloat32Array();
+    [Measure] Float64Array toFloat64Array();
     stringifier;
     serializer = {attribute};
 };