Merge pull request #892 from brendandahl/chrome-2

More fixes for chrome.

midp/gfx.js

@@ -188,12 +188,10 @@ var currentlyFocusedTextEditor;
                 setImageData(imageData, img.naturalWidth, img.naturalHeight, context);
 
                 URL.revokeObjectURL(img.src);
-                img.src = '';
                 resolve();
             }
             img.onerror = function(e) {
                URL.revokeObjectURL(img.src);
-               img.src = '';
                ctx.setAsCurrentContext();
                reject($.newIllegalArgumentException("error decoding image"));
             }

tests/contacts.js

@@ -72,6 +72,11 @@ var fakeContacts = [
   },],
 },];
 
+// Polyfill to enable testing in chrome.
+if (typeof mozContact === "undefined") {
+  function mozContact() {}
+}
+
 // Turn the contact object into a mozContact to make the testing
 // environment more similar to reality.
 function toMozContact(fakeContact) {