Remove InputMethodManager::EnableHotkeys() and DisableHotkeys().

chrome/browser/chromeos/input_method/mock_input_method_manager.cc

Index: chrome/browser/chromeos/input_method/mock_input_method_manager.cc
diff --git a/chrome/browser/chromeos/input_method/mock_input_method_manager.cc b/chrome/browser/chromeos/input_method/mock_input_method_manager.cc
index b3424ba8911cf319d2fd6fa3799a02596b95ba43..c042daa04abb32dd33e513cafccccb06dc4f3c3b 100644
--- a/chrome/browser/chromeos/input_method/mock_input_method_manager.cc
+++ b/chrome/browser/chromeos/input_method/mock_input_method_manager.cc
@@ -94,12 +94,6 @@ void MockInputMethodManager::AddInputMethodExtension(
 void MockInputMethodManager::RemoveInputMethodExtension(const std::string& id) {
 }
 
-void MockInputMethodManager::EnableHotkeys() {
-}
-
-void MockInputMethodManager::DisableHotkeys() {
-}
-
 bool MockInputMethodManager::SwitchToNextInputMethod() {
   return true;
 }