network service: pass PlzNavigate resulting data via mojo data pipe

content/common/frame_messages.h

Index: content/common/frame_messages.h
diff --git a/content/common/frame_messages.h b/content/common/frame_messages.h
index 002ae95d94d653cd5f2520a22320eb8cd5368b7b..443f9697d4c8117ecae047b072dc7ceebe1613d9 100644
--- a/content/common/frame_messages.h
+++ b/content/common/frame_messages.h
@@ -909,10 +909,17 @@ IPC_MESSAGE_ROUTED2(FrameMsg_SelectPopupMenuItems,
 // request |stream_url| to get access to the stream containing the body of the
 // response.
 IPC_MESSAGE_ROUTED4(FrameMsg_CommitNavigation,
-                    content::ResourceResponseHead,    /* response */
-                    GURL,                             /* stream_url */
-                    content::CommonNavigationParams,  /* common_params */
-                    content::RequestNavigationParams  /* request_params */)
+                    content::ResourceResponseHead,   /* response */
+                    GURL,                            /* stream_url */
+                    content::CommonNavigationParams, /* common_params */
+                    content::RequestNavigationParams /* request_params */)
+
+// Same as FrameMsg_CommitNavigation, but used when --enable-network-service.

[jam, 2017/04/12 18:13:45]

why not just one IPC with both parameters?

[scottmg, 2017/04/12 18:42:41]

Sure, that's probably better to match the rest.

[scottmg, 2017/04/12 20:37:11]

Done.

+IPC_MESSAGE_ROUTED4(FrameMsg_CommitNavigationNetworkService,
+                    content::ResourceResponseHead,   /* response */
+                    mojo::DataPipeConsumerHandle,    /* handle */
+                    content::CommonNavigationParams, /* common_params */
+                    content::RequestNavigationParams /* request_params */)
 
 // PlzNavigate
 // Tells the renderer that a navigation failed with the error code |error_code|