Move ExtensionPrefs and friends to extensions/ directory.

extensions/browser/extension_pref_store.h

Index: extensions/browser/extension_pref_store.h
diff --git a/chrome/browser/extensions/extension_pref_store.h b/extensions/browser/extension_pref_store.h
similarity index 83%
rename from chrome/browser/extensions/extension_pref_store.h
rename to extensions/browser/extension_pref_store.h
index 068219e776f36b88f0d5527de3ea3aa0b1068ef6..36af3e9050f0555f746bd8f573629094639e7163 100644
--- a/chrome/browser/extensions/extension_pref_store.h
+++ b/extensions/browser/extension_pref_store.h
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_PREF_STORE_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREF_STORE_H_
+#ifndef EXTENSIONS_BROWSER_EXTENSION_PREF_STORE_H_
+#define EXTENSIONS_BROWSER_EXTENSION_PREF_STORE_H_
 
 #include <string>
 
 #include "base/prefs/value_map_pref_store.h"
-#include "chrome/browser/extensions/extension_pref_value_map.h"
+#include "extensions/browser/extension_pref_value_map.h"
 
 // A (non-persistent) PrefStore implementation that holds effective preferences
 // set by extensions. These preferences are managed by and fetched from an
@@ -35,4 +35,4 @@ class ExtensionPrefStore : public ValueMapPrefStore,
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefStore);
 };
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREF_STORE_H_
+#endif  // EXTENSIONS_BROWSER_EXTENSION_PREF_STORE_H_