Add a mouse lock test to verify bubble clear when tab focus lost.

chrome/test/functional/fullscreen_mouselock.py

Index: chrome/test/functional/fullscreen_mouselock.py
diff --git a/chrome/test/functional/fullscreen_mouselock.py b/chrome/test/functional/fullscreen_mouselock.py
index 6cc08375db997f1f6ca51c6f938b543dc640541b..4b5ea9109c39de529dcedd2a5c859c4c4559cdc5 100755
--- a/chrome/test/functional/fullscreen_mouselock.py
+++ b/chrome/test/functional/fullscreen_mouselock.py
@@ -364,6 +364,17 @@ class FullscreenMouselockTest(pyauto.PyUITest):
     self.assertTrue(self.WaitUntil(lambda: not self.IsMouseLocked()),
                     msg='Mouse lock did not break when page is reloaded.')
 
+  def testNoMLBubbleWhenTabLoseFocus(self):
+    """Verify mouse lock bubble goes away when tab loses focus."""
+    self.NavigateToURL(self.GetHttpURLForDataPath(
+        'fullscreen_mouselock', 'fullscreen_mouselock.html'))
+    self._driver.find_element_by_id('lockMouse1').click()
+    self.assertTrue(self.WaitUntil(self.IsMouseLockPermissionRequested))
+    self.RunCommand(pyauto.IDC_NEW_TAB)

[Nirnimesh, 2012/06/09 08:09:06]

Use AppendTab instead

[dyu1, 2012/06/12 17:01:21]

Done.

+    self.assertTrue(self.WaitUntil(
+        lambda: not self.IsFullscreenBubbleDisplayingButtons()),
+                    msg='Mouse lock bubble did not clear when tab lost focus.')
+
   def ExitTabFSToBrowserFS(self):
     """Verify exiting tab fullscreen leaves browser in browser fullscreen.