Refactored the URLBlacklistManager to avoid chrome/ and content/ dependencies.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 62b23ba4f7376c3bacf7d5c23ddf84f7862cd6d8..14e7770abd5d9a4bcd7ec3a67bf3aea1e218ca94 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -494,12 +494,6 @@ const char kAlternateProtocolServers[] = "spdy.alternate_protocol";
 // Disables the listed protocol schemes.
 const char kDisabledSchemes[] = "protocol.disabled_schemes";
 
-// Blocks access to the listed host patterns.
-const char kUrlBlacklist[] = "policy.url_blacklist";
-
-// Allows access to the listed host patterns, as exceptions to the blacklist.
-const char kUrlWhitelist[] = "policy.url_whitelist";
-
 #if defined(OS_ANDROID)
 // Last time that a check for cloud policy management was done. This time is
 // recorded on Android so that retries aren't attempted on every startup.