Move prefs-related files under chrome/browser/ into a prefs/ subdir.

chrome/browser/extensions/extension_prefs_unittest.cc

 // Copyright (c) 2010 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/message_loop.h"
 #include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
 #include "base/stl_util-inl.h"
 #include "base/string_number_conversions.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/test_extension_prefs.h"
-#include "chrome/browser/pref_service.h"
+#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Time;
 using base::TimeDelta;
 
 // Base class for tests.
 class ExtensionPrefsTest : public testing::Test {
  public:
@@ skipping 303 matching lines @@
     EXPECT_EQ(Extension::DISABLED,
               prefs()->GetExtensionState(extension_->id()));
     EXPECT_TRUE(prefs()->IsIncognitoEnabled(extension_->id()));
   }
 
  private:
   scoped_ptr<Extension> extension_;
 };
 TEST_F(ExtensionPrefsOnExtensionInstalled,
        ExtensionPrefsOnExtensionInstalled) {}