Fix some grammar in chrome/browser/resources/

chrome/browser/resources/chromeos/login/bubble.js

Index: chrome/browser/resources/chromeos/login/bubble.js
diff --git a/chrome/browser/resources/chromeos/login/bubble.js b/chrome/browser/resources/chromeos/login/bubble.js
index d8cf5e3e5b7e94f39a2d3ba3fe076ad3c7401c1d..b7b9e6442525ed68630394d0a016cf0caeedbf95 100644
--- a/chrome/browser/resources/chromeos/login/bubble.js
+++ b/chrome/browser/resources/chromeos/login/bubble.js
@@ -85,7 +85,7 @@ cr.define('cr.ui', function() {
      *     left (for vertical attachment) or top (for horizontal attachment)
      *     side of the element. If not specified, the bubble is positioned to
      *     be aligned with the left/top side of the element but not farther than
-     *     half of it's weight/height.
+     *     half of its weight/height.
      * @param {number=} opt_padding Optional padding of the bubble.
      * @public
      */
@@ -158,7 +158,7 @@ cr.define('cr.ui', function() {
      *     left (for vertical attachment) or top (for horizontal attachment)
      *     side of the element. If not specified, the bubble is positioned to
      *     be aligned with the left/top side of the element but not farther than
-     *     half of it's weight/height.
+     *     half of its weight/height.
      * @param {number=} opt_padding Optional padding of the bubble.
      * @public
      */