Use a <button> that looks like a link to prevent right click and middle click.

BUG=9591

TEST=Go to the history page and make sure that "Delete history for this day"
still works and that it does not allow opening the "link" in a new window.

Review URL: http://codereview.chromium.org/155892

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@21239 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/history.html

@@ -498,8 +498,7 @@ HistoryView.prototype.displayResults_ = function() {
               localStrings.getString('cont')));
         }
 
-        var link = createElementWithClassName('a', 'delete-day');
-        link.href = '#';
+        var link = createElementWithClassName('button', 'delete-day');
         link.time = page.time.toString();
         link.onclick = deleteDay;
         link.appendChild(
@@ -824,6 +823,13 @@ function historyDeleted() {
   display:inline-block;
 }
 .delete-day {
+  display: inline;
+  -webkit-appearance: none;
+  background: none;
+  border: 0;
+  color: blue; /* -webkit-link makes it purple :'( */
+  cursor: pointer;
+  text-decoration: underline;
   padding:0px 9px;
   display:inline-block;
 }