servo: Merge #6774 - Check if naturalWidth / naturalHeight works w/ DPR (from notriddle:master); r=jdm

$ ./mach run --device-pixel-ratio=1 tests/html/get-natural-height.html ALERT: width: 600, height: 254 $ ./mach run --device-pixel-ratio=2 tests/html/get-natural-height.html ALERT: width: 600, height: 254 $ ./mach run --device-pixel-ratio=.5 tests/html/get-natural-height.html ALERT: width: 600, height: 254 It doesn't. Answers #6769. Source-Repo: https://github.com/servo/servo Source-Revision: 1eeb05d914bcec1b4839b3f0be7b13c98b711783
2015-07-27 17:13:02 -06:00 · 2015-07-27 17:13:02 -06:00 · 885f81a912
--- a/servo/tests/html/get-natural-height.html
+++ b/servo/tests/html/get-natural-height.html
@ -0,0 +1,24 @@
 <!DOCTYPE html>
 <html>
 <head>
 <style>
 div {
    font-size: 4em;
 }
 </style>
 </head>
 <body>
 <img id="test-image" src="longcattop.png">
 <div id="test-output"></div>
 <script>
 var testImage  = document.getElementById('test-image');
 var testOutput = document.getElementById('test-output');
 testImage.onload = function() {
    testOutput.innerHTML =
        "width: "  + testImage.naturalWidth + ", " +
        "height: " + testImage.naturalHeight;
    alert(testOutput.innerHTML);
 };
 </script>
 </body>
 </html>