Observe in views::InputMethodBridge if host IME is destroyed
Sometimes, before the widget and its corresponding input method bridge
is destroyed, the host input method used by the bridge is destroyed.
This can especially happen in unit tests. So, input method bridge should
observe the host input method to avoid calling methods on it if it is
destroyed.
The tests that were disabled because of this issue are re-enabled, too.
BUG=315883
Review URL: https://codereview.chromium.org/58903012
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236186 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed
