Move all files related to tracked preferences from c/b/prefs to c/b/prefs/tracked.

chrome/browser/prefs/tracked/tracked_split_preference.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_
 #define CHROME_BROWSER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "chrome/browser/prefs/pref_hash_filter.h"
+#include "chrome/browser/prefs/tracked/pref_hash_filter.h"
 #include "chrome/browser/prefs/tracked/tracked_preference.h"
 #include "chrome/browser/prefs/tracked/tracked_preference_helper.h"
 
 class TrackedPreferenceValidationDelegate;
 
 // A TrackedSplitPreference must be tracking a dictionary pref. Each top-level
 // entry in its dictionary is tracked and enforced independently. An optional
 // delegate is notified of the status of the preference during enforcement.
 // Note: preferences using this strategy must be kept in sync with
 // TrackedSplitPreferences in histograms.xml.
@@ skipping 15 matching lines @@
 
  private:
   const std::string pref_path_;
   const TrackedPreferenceHelper helper_;
   TrackedPreferenceValidationDelegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(TrackedSplitPreference);
 };
 
 #endif  // CHROME_BROWSER_PREFS_TRACKED_TRACKED_SPLIT_PREFERENCE_H_