Move/replace/rename URL-based extension getters from ExtensionService to/in ExtensionSet.

chrome/common/extensions/extension_messages.h

Index: chrome/common/extensions/extension_messages.h
diff --git a/chrome/common/extensions/extension_messages.h b/chrome/common/extensions/extension_messages.h
index 0d4f1b8c9a2424de9e2f757e3b3fc2abfbb02ddf..a3f38f9ffa0fb711eb6d27b42056e3b626f19e28 100644
--- a/chrome/common/extensions/extension_messages.h
+++ b/chrome/common/extensions/extension_messages.h
@@ -33,9 +33,12 @@ IPC_STRUCT_BEGIN(ExtensionHostMsg_Request_Params)
   // URL of the frame the request was sent from. This isn't necessarily an
   // extension url. Extension requests can also originate from content scripts,
   // in which case extension_id will indicate the ID of the associated
-  // extension. Or, they can origiante from hosted apps or normal web pages.
+  // extension. Or, they can originate from hosted apps or normal web pages.
   IPC_STRUCT_MEMBER(GURL, source_url)
 
+  // Web security origin of the frame the request was sent from.
+  IPC_STRUCT_MEMBER(string16, origin)
+
   // Unique request id to match requests and responses.
   IPC_STRUCT_MEMBER(int, request_id)