Add FilePath to base namespace.

chrome/browser/prefs/chrome_pref_service_factory.h

Index: chrome/browser/prefs/chrome_pref_service_factory.h
diff --git a/chrome/browser/prefs/chrome_pref_service_factory.h b/chrome/browser/prefs/chrome_pref_service_factory.h
index 84e5a637400ef75d6be8aaccf3939d91d9212a69..7ba5053f44fcfb5a067da7d8b256736412305228 100644
--- a/chrome/browser/prefs/chrome_pref_service_factory.h
+++ b/chrome/browser/prefs/chrome_pref_service_factory.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_PREFS_CHROME_PREF_SERVICE_FACTORY_H_
 
 namespace base {
+class FilePath;
 class SequencedTaskRunner;
 }
 
@@ -13,7 +14,6 @@ namespace policy {
 class PolicyService;
 }
 
-class FilePath;
 class PrefServiceSimple;
 class PrefServiceSyncable;
 class PrefStore;
@@ -35,14 +35,14 @@ namespace chrome_prefs {
 // function returned.
 
 PrefServiceSimple* CreateLocalState(
-    const FilePath& pref_filename,
+    const base::FilePath& pref_filename,
     base::SequencedTaskRunner* pref_io_task_runner,
     policy::PolicyService* policy_service,
     PrefStore* extension_prefs,
     bool async);
 
 PrefServiceSyncable* CreateProfilePrefs(
-    const FilePath& pref_filename,
+    const base::FilePath& pref_filename,
     base::SequencedTaskRunner* pref_io_task_runner,
     policy::PolicyService* policy_service,
     PrefStore* extension_prefs,