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

chrome/browser/chromeos/input_method/input_method_manager.h

Index: chrome/browser/chromeos/input_method/input_method_manager.h
diff --git a/chrome/browser/chromeos/input_method/input_method_manager.h b/chrome/browser/chromeos/input_method/input_method_manager.h
index 510b9fc0354308f2f96eb8edaaf04be44a51469d..786db508dd1edcc1587df2625abee285ae7cb4ac 100644
--- a/chrome/browser/chromeos/input_method/input_method_manager.h
+++ b/chrome/browser/chromeos/input_method/input_method_manager.h
@@ -73,9 +73,6 @@ class InputMethodManager {
   virtual void RemoveCandidateWindowObserver(
       CandidateWindowObserver* observer) = 0;
 
-  // Sets the current browser status.
-  virtual void SetState(State new_state) = 0;
-
   // Returns all input methods that are supported, including ones not active.
   // This function never returns NULL. Note that input method extensions are NOT
   // included in the result.