Decompose BrowserStateMonitor into two parts, simplifying unit tests and APIs.

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 7a1facd24cccd1a8cfdd8f073db49f68951135dc..d79810c4b00f88f404e4329e18ffe1368b6a26b0 100644
--- a/chrome/browser/chromeos/input_method/mock_input_method_manager.cc
+++ b/chrome/browser/chromeos/input_method/mock_input_method_manager.cc
@@ -10,8 +10,6 @@ namespace input_method {
 MockInputMethodManager::MockInputMethodManager()
     : add_observer_count_(0),
       remove_observer_count_(0),
-      set_state_count_(0),
-      last_state_(STATE_TERMINATING),
       util_(&delegate_, whitelist_.GetSupportedInputMethods()) {
 }
 
@@ -36,11 +34,6 @@ void MockInputMethodManager::RemoveCandidateWindowObserver(
     InputMethodManager::CandidateWindowObserver* observer) {
 }
 
-void MockInputMethodManager::SetState(State new_state) {
-  ++set_state_count_;
-  last_state_ = new_state;
-}
-
 scoped_ptr<InputMethodDescriptors>
 MockInputMethodManager::GetSupportedInputMethods() const {
   scoped_ptr<InputMethodDescriptors> result(new InputMethodDescriptors);