Move remaining non-test, non-Chrome-specific Prefs code to base/prefs/.

base/prefs/pref_value_store.h

Index: base/prefs/pref_value_store.h
diff --git a/chrome/browser/prefs/pref_value_store.h b/base/prefs/pref_value_store.h
similarity index 98%
rename from chrome/browser/prefs/pref_value_store.h
rename to base/prefs/pref_value_store.h
index 404796ba8ab37ab092116348f057267b63a494a3..3006b6e6b975f71115f1621dee311484411781fc 100644
--- a/chrome/browser/prefs/pref_value_store.h
+++ b/base/prefs/pref_value_store.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_PREFS_PREF_VALUE_STORE_H_
-#define CHROME_BROWSER_PREFS_PREF_VALUE_STORE_H_
+#ifndef BASE_PREFS_PREF_VALUE_STORE_H_
+#define BASE_PREFS_PREF_VALUE_STORE_H_
 
 #include <map>
 #include <string>
@@ -13,6 +13,7 @@
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
+#include "base/prefs/base_prefs_export.h"
 #include "base/prefs/pref_store.h"
 #include "base/values.h"
 
@@ -26,7 +27,7 @@ class PrefStore;
 //
 // Unless otherwise explicitly noted, all of the methods of this class must
 // be called on the UI thread.
-class PrefValueStore {
+class BASE_PREFS_EXPORT PrefValueStore {
  public:
   typedef base::Callback<void(const std::string&)> PrefChangedCallback;
 
@@ -256,4 +257,4 @@ class PrefValueStore {
   DISALLOW_COPY_AND_ASSIGN(PrefValueStore);
 };
 
-#endif  // CHROME_BROWSER_PREFS_PREF_VALUE_STORE_H_
+#endif  // BASE_PREFS_PREF_VALUE_STORE_H_