Fix Views Combobox and Tree View text input.

ui/views/controls/combobox/native_combobox_views_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 "base/strings/utf_string_conversions.h"
 #include "ui/base/events/event.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/base/models/combobox_model.h"
 #include "ui/views/controls/combobox/combobox.h"
 #include "ui/views/controls/combobox/native_combobox_views.h"
@@ skipping 95 matching lines @@
     View* container = new View();
     widget_->SetContentsView(container);
     container->AddChildView(combobox_);
 
     combobox_view_ = static_cast<NativeComboboxViews*>(
         combobox_->GetNativeWrapperForTesting());
     ASSERT_TRUE(combobox_view_);
 
     input_method_ = new MockInputMethod();
     widget_->ReplaceInputMethod(input_method_);
-
-    // Assumes the Widget is always focused.
-    input_method_->OnFocus();
-
     combobox_->RequestFocus();
   }
 
  protected:
   void SendKeyEvent(ui::KeyboardCode key_code) {
     ui::KeyEvent event(ui::ET_KEY_PRESSED, key_code, 0, false);
     input_method_->DispatchKeyEvent(event);
   }
 
   View* GetFocusedView() {
@@ skipping 55 matching lines @@
   widget_->SetContentsView(container);
   container->AddChildView(combobox_);
 
   combobox_view_ = static_cast<NativeComboboxViews*>(
       combobox_->GetNativeWrapperForTesting());
   ASSERT_TRUE(combobox_view_);
   ASSERT_FALSE(combobox_view_->enabled());
 }
 
 }  // namespace views