[test] switch to devtools window w/o specifying window handle

Cong Liu · rogerwang · commit c49964048670 · 2017-01-20T11:13:05.000+08:00
Fixed the case of cookie-lost-devtools-close
diff --git a/test/sanity/cookie-lost-devtools-close/test.py b/test/sanity/cookie-lost-devtools-close/test.py
@@ -48,7 +48,7 @@ def click_expect(expected):
     wait_window_handles(driver, 2)
     click_expect('sid=1')
     print 'close devtools'
-    switch_to_devtools(driver, devtools_window=driver.window_handles[-1])
+    switch_to_devtools(driver)
     driver.close()
     driver.switch_to_window(driver.window_handles[0])
     wait_window_handles(driver, 1)
