FBTF: Forward declare everything possible in testing_profile.h

chrome/browser/gtk/options/languages_page_gtk_unittest.cc

 // Copyright (c) 2006-2008 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/gtk/options/languages_page_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include "base/string_util.h"
 #include "chrome/browser/language_combobox_model.h"
+#include "chrome/browser/pref_service.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/testing_profile.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class LanguagesPageGtkTest : public testing::Test {
  public:
   virtual void SetUp() {
     profile_.reset(new TestingProfile());
   }
 
@@ skipping 277 matching lines @@
   EXPECT_STREQ("French", GetDisplayedSpellCheckerLang(page).c_str());
 
   gtk_combo_box_set_active(
         GTK_COMBO_BOX(page.dictionary_language_combobox_),
         page.dictionary_language_model_->GetIndexFromLocale("it"));
   EXPECT_STREQ("Italian", GetDisplayedLangs(page).c_str());
   EXPECT_STREQ("it",
       profile_->GetPrefs()->GetString(prefs::kAcceptLanguages).c_str());
   EXPECT_STREQ("Italian", GetDisplayedSpellCheckerLang(page).c_str());
 }