Add UMA metric to track usage of sending a mousedown to select elements.

third_party/WebKit/LayoutTests/imported/wpt/html/semantics/embedded-content/the-audio-element/audio_constructor.html

Index: third_party/WebKit/LayoutTests/imported/wpt/html/semantics/embedded-content/the-audio-element/audio_constructor.html
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/html/semantics/embedded-content/the-audio-element/audio_constructor.html b/third_party/WebKit/LayoutTests/imported/wpt/html/semantics/embedded-content/the-audio-element/audio_constructor.html
index 995ea0ba056b58c6c24b8fd73c19f98006659b3a..2420988693a55cfd070cfdb60751bf952b92fc91 100644
--- a/third_party/WebKit/LayoutTests/imported/wpt/html/semantics/embedded-content/the-audio-element/audio_constructor.html
+++ b/third_party/WebKit/LayoutTests/imported/wpt/html/semantics/embedded-content/the-audio-element/audio_constructor.html
@@ -11,18 +11,12 @@ test(function() {
     valueOf: function() { throw Error() }
   };
   var tests = [
-    [function() { return Audio() }, null, "No arguments, without new"],
-    [function() { return new Audio() }, null, "No arguments, with new"],
-    [function() { return Audio("") }, "", "Empty string argument, without new"],
-    [function() { return new Audio("") }, "", "Empty string argument, with new"],
-    [function() { return Audio("src") }, "src", "Non-empty string argument, without new"],
-    [function() { return new Audio("src") }, "src", "Non-empty string argument, with new"],
-    [function() { return Audio(null) }, "null", "Null argument, without new"],
-    [function() { return new Audio(null) }, "null", "Null argument, with new"],
-    [function() { return Audio(undefined) }, null, "Undefined argument, without new"],
-    [function() { return new Audio(undefined) }, null, "Undefined argument, with new"],
-    [function() { return Audio("", throwingObject) }, "", "Extra argument, without new"],
-    [function() { return new Audio("", throwingObject) }, "", "Extra argument, with new"],
+    [function() { return new Audio() }, null, "No arguments"],
+    [function() { return new Audio("") }, "", "Empty string argument"],
+    [function() { return new Audio("src") }, "src", "Non-empty string argument"],
+    [function() { return new Audio(null) }, "null", "Null argument"],
+    [function() { return new Audio(undefined) }, null, "Undefined argument"],
+    [function() { return new Audio("", throwingObject) }, "", "Extra argument"],
   ];
   tests.forEach(function(t) {
     var fn = t[0], expectedSrc = t[1], description = t[2];
@@ -40,6 +34,11 @@ test(function() {
 });
 test(function() {
   assert_throws(new TypeError(), function() {
+    Audio();
+  });
+}, "Calling Audio should throw");
+test(function() {
+  assert_throws(new TypeError(), function() {
     HTMLAudioElement();
   });
 }, "Calling HTMLAudioElement should throw");