Functionality to allow blacklist and whitelist of custom schemes

net/base/network_delegate.h

Index: net/base/network_delegate.h
diff --git a/net/base/network_delegate.h b/net/base/network_delegate.h
index 81d81902412f89f952976e569132b9949d08e1fb..d4c0f97b02317884513d90e1a6130ccd55bb933a 100644
--- a/net/base/network_delegate.h
+++ b/net/base/network_delegate.h
@@ -53,6 +53,15 @@ class NET_EXPORT NetworkDelegate : public base::NonThreadSafe {
   };
   typedef base::Callback<void(AuthRequiredResponse)> AuthCallback;
 
+  // Indicates if the URL matches a pattern defined in blacklist, in whitelist
+  // or doesn't match anything in either lists as defined in URLBlacklist and
+  // URLWhitelist policies.
+  enum URLBlacklistState {
+    URL_IN_WHITELIST,
+    URL_IN_BLACKLIST,
+    URL_NEUTRAL_STATE,
+  };
+
   virtual ~NetworkDelegate() {}
 
   // Notification interface called by the network stack. Note that these
@@ -109,6 +118,10 @@ class NET_EXPORT NetworkDelegate : public base::NonThreadSafe {
       const GURL& target_url,
       const GURL& referrer_url) const;
 
+  // This function is to be used to check if the |url| is defined in
+  // blacklist or whitelist policy.
+  virtual URLBlacklistState GetURLBlacklistState(const GURL& url) const;
+
  private:
   // This is the interface for subclasses of NetworkDelegate to implement. These
   // member functions will be called by the respective public notification