Add InputMethodObserver support into InputMethodBase
This is a preparation CL to fix issue 164964.
Following observer callbacks are defined but not yet
supported by ui::InputMethodBase and its sub classes.
- InputMethodObserver::OnCaretBoundsChanged
- InputMethodObserver::OnInputLocaleChanged
This CL makes these callbacks functional for each
sub class of ui::InputMethodBase.
BUG=164964
TEST=ui_unittests --gtest_filter=InputMethodBaseTest.*
Review URL: https://codereview.chromium.org/48393003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231563 0039d316-1c4b-4281-b951-d872f2087c98
9 files changed