Add MockInputMethodManager under ui/base/ime/chromeos/.
Thus we could use MockInputMethodManager from ash/common/system/chromeos/.
See https://codereview.chromium.org/2599743003/.

Rename MockInputMethodManager (under chrome/browser/chromeos/input_method/) as MockInputMethodManagerImpl
and make it extends MockInputMethodManager.

BUG=676568
TEST=None

Review-Url: https://codereview.chromium.org/2605843002
Cr-Commit-Position: refs/heads/master@{#441819}
15 files changed