history: break <label> relationship between time and delete checkbox.

chrome/browser/resources/history/history.js

Index: chrome/browser/resources/history/history.js
diff --git a/chrome/browser/resources/history/history.js b/chrome/browser/resources/history/history.js
index 5d91c4dace5df7710f1c267d2cc925e3bbc7ca0d..6c18a61a5bd88413d3673a357f6123659fb06e2d 100644
--- a/chrome/browser/resources/history/history.js
+++ b/chrome/browser/resources/history/history.js
@@ -183,7 +183,7 @@ Visit.prototype.getResultDOM = function(propertyBag) {
   var useMonthDate = propertyBag.useMonthDate || false;
   var focusless = propertyBag.focusless || false;
   var node = createElementWithClassName('li', 'entry');
-  var time = createElementWithClassName('label', 'time');
+  var time = createElementWithClassName('span', 'time');
   var entryBox = createElementWithClassName('div', 'entry-box');
   var domain = createElementWithClassName('div', 'domain');
 
@@ -196,9 +196,10 @@ Visit.prototype.getResultDOM = function(propertyBag) {
     var checkbox = document.createElement('input');
     checkbox.type = 'checkbox';
     checkbox.id = 'checkbox-' + this.id_;
+    checkbox.setAttribute('aria-label',
+                          loadTimeData.getString('removeFromHistory'));
     checkbox.time = this.date.getTime();
     checkbox.addEventListener('click', checkboxClicked);
-    time.setAttribute('for', checkbox.id);
     entryBox.appendChild(checkbox);
 
     if (focusless)