[chromedriver] Disable multi-tab test on chromedriver webview shell.

BUG=chromedriver:1497
TBR=stgao@chromium.org

Review-Url: https://codereview.chromium.org/2328583002
Cr-Commit-Position: refs/heads/master@{#417321}

chrome/test/chromedriver/test/run_py_tests.py

@@ -173,6 +173,7 @@ _ANDROID_NEGATIVE_FILTER['chromedriver_webview_shell'] = (
         'ChromeDriverTest.testGetWindowHandles',
         'ChromeDriverTest.testSwitchToWindow',
         'ChromeDriverTest.testShouldHandleNewWindowLoadingProperly',
+        'ChromeDriverTest.testGetLogOnClosedWindow',
         # https://bugs.chromium.org/p/chromedriver/issues/detail?id=1295
         # TODO(gmanikpure): re-enable this test when we stop supporting
         # WebView on KitKat.