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

chrome/browser/chromeos/input_method/input_method_delegate_impl.cc

Index: chrome/browser/chromeos/input_method/input_method_delegate_impl.cc
diff --git a/chrome/browser/chromeos/input_method/input_method_delegate_impl.cc b/chrome/browser/chromeos/input_method/input_method_delegate_impl.cc
index 4b6e71f6b22600ef4679cf474349dad1b9aaea05..a69cdc4d0e3e1a678d5a7264bba3939c83f3f518 100644
--- a/chrome/browser/chromeos/input_method/input_method_delegate_impl.cc
+++ b/chrome/browser/chromeos/input_method/input_method_delegate_impl.cc
@@ -4,11 +4,9 @@
 
 #include "chrome/browser/chromeos/input_method/input_method_delegate_impl.h"
 
-#include "base/prefs/public/pref_service_base.h"
+#include "base/logging.h"
 #include "chrome/browser/browser_process.h"
-#include "chrome/browser/chromeos/language_preferences.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
 
 namespace chromeos {
@@ -16,40 +14,6 @@ namespace input_method {
 
 InputMethodDelegateImpl::InputMethodDelegateImpl() {}
 
-void InputMethodDelegateImpl::SetSystemInputMethod(
-    const std::string& input_method) {
-  if (g_browser_process) {
-    PrefServiceBase* local_state = g_browser_process->local_state();
-    if (local_state) {
-      local_state->SetString(language_prefs::kPreferredKeyboardLayout,
-                             input_method);
-      return;
-    }
-  }
-
-  NOTREACHED();
-}
-
-void InputMethodDelegateImpl::SetUserInputMethod(
-    const std::string& input_method) {
-  PrefServiceBase* user_prefs = NULL;
-  Profile* profile = ProfileManager::GetDefaultProfile();
-  if (profile)
-    user_prefs = profile->GetPrefs();
-  if (!user_prefs)
-    return;
-
-  const std::string current_input_method_on_pref =
-      user_prefs->GetString(prefs::kLanguageCurrentInputMethod);
-  if (current_input_method_on_pref == input_method)
-    return;
-
-  user_prefs->SetString(prefs::kLanguagePreviousInputMethod,
-                        current_input_method_on_pref);
-  user_prefs->SetString(prefs::kLanguageCurrentInputMethod,
-                        input_method);
-}
-
 std::string InputMethodDelegateImpl::GetHardwareKeyboardLayout() const {
   if (g_browser_process) {
     PrefServiceBase* local_state = g_browser_process->local_state();