Split the policy refresh rate preference into user- and device-policy refresh rate.

chrome/common/pref_names.h

Index: chrome/common/pref_names.h
diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h
index 8cbabd060374a013a71f489712ea93df1e813b27..3d0efe293d29bb0d17548ec6c88707425cc927d1 100644
--- a/chrome/common/pref_names.h
+++ b/chrome/common/pref_names.h
@@ -246,8 +246,6 @@ extern const char kEnableBookmarkBar[];
 extern const char kPinnedTabs[];
 extern const char kHttpThrottlingEnabled[];
 
-extern const char kPolicyRefreshRate[];
-
 extern const char kDisable3DAPIs[];
 extern const char kEnableHyperlinkAuditing[];
 extern const char kEnableReferrers[];
@@ -502,6 +500,8 @@ extern const char kCustomHandlersEnabled[];
 extern const char kUserCreatedLoginItem[];
 extern const char kBackgroundModeEnabled[];
 
+extern const char kDevicePolicyRefreshRate[];
+extern const char kUserPolicyRefreshRate[];
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_