Add frameId to MessageSender (extension messaging API)

extensions/common/extension_messages.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // IPC messages for extensions.
 // Multiply-included message file, hence no include guard.
 
 #include <string>
 #include <vector>
 
@@ skipping 139 matching lines @@
 // Struct containing the data for external connections to extensions. Used to
 // handle the IPCs initiated by both connect() and onConnect().
 IPC_STRUCT_BEGIN(ExtensionMsg_ExternalConnectionInfo)
   // The ID of the extension that is the target of the request.
   IPC_STRUCT_MEMBER(std::string, target_id)
 
   // The ID of the extension that initiated the request. May be empty if it
   // wasn't initiated by an extension.
   IPC_STRUCT_MEMBER(std::string, source_id)
 
+  // The ID of the frame that iniated the request. 0 if main frame, -1 if not
+  // initiated from a frame.

[not at google - send to devlin, 2014/11/10 18:36:42]

0 if main frame, positive otherwise, or -1 if not initiated from a frame.

[robwu, 2014/11/10 21:43:07]

Done.

+  IPC_STRUCT_MEMBER(int, source_frame_id)
+
   // The URL of the frame that initiated the request.
   IPC_STRUCT_MEMBER(GURL, source_url)
 IPC_STRUCT_END()
 
 IPC_STRUCT_TRAITS_BEGIN(extensions::DraggableRegion)
   IPC_STRUCT_TRAITS_MEMBER(draggable)
   IPC_STRUCT_TRAITS_MEMBER(bounds)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::SocketPermissionRequest)
@@ skipping 604 matching lines @@
                     int /* acc_obj_id */,
                     base::string16 /* selector */)
 
 // Result of a query selector request.
 // result_acc_obj_id is the accessibility tree ID of the result element; 0
 // indicates no result.
 IPC_MESSAGE_ROUTED3(ExtensionHostMsg_AutomationQuerySelector_Result,
                     int /* request_id */,
                     ExtensionHostMsg_AutomationQuerySelector_Error /* error */,
                     int /* result_acc_obj_id */)