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

chrome/browser/cocoa/custom_home_pages_model_unittest.mm

 // 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/scoped_nsobject.h"
 #include "chrome/browser/cocoa/browser_test_helper.h"
 #import "chrome/browser/cocoa/custom_home_pages_model.h"
-#include "chrome/browser/session_startup_pref.h"
+#include "chrome/browser/prefs/session_startup_pref.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #import "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 
 // A helper for KVO and NSNotifications. Makes a note that it's been called
 // back.
 @interface CustomHomePageHelper : NSObject {
  @public
   BOOL sawNotification_;
 }
@@ skipping 168 matching lines @@
 
   EXPECT_TRUE(kvo_helper.get()->sawNotification_);
   EXPECT_EQ([model_ countOfCustomHomePages], 1U);
   EXPECT_NSEQ(@"http://www.google.com/",
               EntryURL([model_ objectInCustomHomePagesAtIndex:0]));
 
   [model_ removeObserver:kvo_helper.get() forKeyPath:@"customHomePages"];
 }
 
 }  // namespace