Add Reset() to IBusController.

chrome/browser/chromeos/input_method/input_method_manager_impl_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/input_method/input_method_manager_impl.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 872 matching lines @@
     scoped_ptr<InputMethodDescriptors> methods(
         manager_->GetActiveInputMethods());
     ASSERT_EQ(2U, methods->size());
     EXPECT_EQ(std::string(kExtensionImePrefix) + "deadbeef",
               // Ext. IMEs should be at the end of the list.
               methods->at(1).id());
   }
   manager_->RemoveObserver(&observer);
 }
 
+TEST_F(InputMethodManagerImplTest, TestReset) {
+  manager_->SetState(InputMethodManager::STATE_BROWSER_SCREEN);
+  std::vector<std::string> ids;
+  ids.push_back("xkb:us::eng");
+  ids.push_back("mozc");
+  EXPECT_TRUE(manager_->EnableInputMethods(ids));
+  EXPECT_EQ(2U, manager_->GetNumActiveInputMethods());
+  EXPECT_EQ(1, controller_->reset_count_);
+  manager_->ChangeInputMethod("mozc");
+  EXPECT_EQ(1, controller_->reset_count_);
+  manager_->ChangeInputMethod("xkb:us::eng");
+  EXPECT_EQ(2, controller_->reset_count_);
+}
+
 }  // namespace input_method
 }  // namespace chromeos