Functionality to allow blacklist and whitelist of custom schemes

components/policy/core/browser/url_blacklist_manager.h

Index: components/policy/core/browser/url_blacklist_manager.h
diff --git a/components/policy/core/browser/url_blacklist_manager.h b/components/policy/core/browser/url_blacklist_manager.h
index 23e6734db64a99e43dd0ee3ca3cc35503d857ae4..92e6a42fb2a081b58789ddf660017329b8711374 100644
--- a/components/policy/core/browser/url_blacklist_manager.h
+++ b/components/policy/core/browser/url_blacklist_manager.h
@@ -21,6 +21,7 @@
 #include "base/prefs/pref_change_registrar.h"
 #include "components/policy/policy_export.h"
 #include "components/url_matcher/url_matcher.h"
+#include "net/base/network_delegate.h"
 #include "url/gurl.h"
 
 class PrefService;
@@ -62,6 +63,9 @@ class POLICY_EXPORT URLBlacklist {
   // Returns true if the URL is blocked.
   bool IsURLBlocked(const GURL& url) const;
 
+  net::NetworkDelegate::URLBlacklistState GetURLBlacklistState(const GURL& url)

[Thiemo Nagel, 2016/03/08 18:44:35]

I'd suggest to break the line after the opening brace.  A single const on the
next line might easily be overlooked, especially since it's not indented.

+  const;
+
   // Returns the number of items in the list.
   size_t Size() const;
 
@@ -160,6 +164,9 @@ class POLICY_EXPORT URLBlacklistManager {
   // from the IO thread.
   bool IsURLBlocked(const GURL& url) const;
 
+  net::NetworkDelegate::URLBlacklistState GetURLBlacklistState(const GURL& url)

[Thiemo Nagel, 2016/03/08 18:44:35]

Same as above.

+  const;
+
   // Returns true if a request for |url| is blocked by the current blacklist.
   //
   // Should only be called for requests for frames (Main frames or subframes).