Content API changes to improve DOM stitching in ThreatDetails code.

components/safe_browsing/common/safebrowsing_messages.h

 // Copyright (c) 2011 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.
 
 // Multiply-included message file, so no include guard.
 
 #include <string>
 #include <vector>
 
 #include "components/safe_browsing/common/safebrowsing_types.h"
@@ skipping 22 matching lines @@
   IPC_STRUCT_MEMBER(int, parent_node_id)
 
   // children of this node. Can be emtpy.
   IPC_STRUCT_MEMBER(std::vector<GURL>, children)
 
   // The unique IDs of the child nodes. Can be empty if there are no children.
   IPC_STRUCT_MEMBER(std::vector<int>, child_node_ids)
 
   // The node's attributes, as a collection of name-value pairs.
   IPC_STRUCT_MEMBER(std::vector<safe_browsing::AttributeNameValue>, attributes)
+
+  // If this node represents a frame or iframe, then this field is set to the
+  // routing ID of the local or remote frame in this renderer process that is
+  // responsible for rendering the contents of this frame (to handle OOPIFs).
+  IPC_STRUCT_MEMBER(int, child_frame_routing_id)

[estark, 2017/05/24 00:42:35]

I'm not sure it matters too much in this case, but
https://dev.chromium.org/Home/chromium-security/education/security-tips-for-i....
says this should be an explicitly sized integer type.

[lpz, 2017/05/24 14:31:39]

Done, and thanks for the handy link!

 IPC_STRUCT_END()
 
 // SafeBrowsing client-side detection messages sent from the renderer to the
 // browser.
 
 // Send part of the DOM to the browser, to be used in a threat report.
 IPC_MESSAGE_ROUTED1(SafeBrowsingHostMsg_ThreatDOMDetails,
                     std::vector<SafeBrowsingHostMsg_ThreatDOMDetails_Node>)
 
 #if defined(FULL_SAFE_BROWSING)
@@ skipping 17 matching lines @@
 // The string is an encoded safe_browsing::ClientSideModel protocol buffer, or
 // empty to disable client-side phishing detection for this renderer.
 IPC_MESSAGE_CONTROL1(SafeBrowsingMsg_SetPhishingModel,
                      std::string /* encoded ClientSideModel proto */)
 
 // Tells the renderer to begin phishing detection for the given toplevel URL
 // which it has started loading.
 IPC_MESSAGE_ROUTED1(SafeBrowsingMsg_StartPhishingDetection,
                     GURL)
 #endif