PlzNavigate: Get StreamPrivate API to work.

chrome/browser/extensions/api/streams_private/streams_private_api.h

Index: chrome/browser/extensions/api/streams_private/streams_private_api.h
diff --git a/chrome/browser/extensions/api/streams_private/streams_private_api.h b/chrome/browser/extensions/api/streams_private/streams_private_api.h
index d1c22433f99849841e94f4b2d85c7cfa584c2091..f552fcc95054c37aadcbac2b731619f08aa73c84 100644
--- a/chrome/browser/extensions/api/streams_private/streams_private_api.h
+++ b/chrome/browser/extensions/api/streams_private/streams_private_api.h
@@ -39,12 +39,16 @@ class StreamsPrivateAPI : public BrowserContextKeyedAPI,
   // should be |expected_content_size| bytes long. If the viewer is being opened
   // in a BrowserPlugin, specify a non-empty |view_id| of the plugin. |embedded|
   // should be set to whether the document is embedded within another document.
+  // TODO(ananta)
+  // Remove the |render_process_id| and |render_frame_id| parameters when
+  // PlzNavigate ships.

[jam, 2016/09/17 00:10:07]

is this true? i.e. we'll still need them for the non-top level plugin case?

nit: please document the three different IDs (i.e. mentioning that for
plznavigate top level plugins, FTNID has the value, otherwise it's the two other
IDs)

[ananta, 2016/09/17 00:23:27]

Thanks. Changed the comment

[ananta, 2016/09/17 02:43:39]

I debugged the pdf case inside an iframe. The render_frame_id and
render_process_id are still -1 in this case. That should not be the top level
case which you mentioned?

   void ExecuteMimeTypeHandler(const std::string& extension_id,
                               content::WebContents* web_contents,
                               std::unique_ptr<content::StreamInfo> stream,
                               const std::string& view_id,
                               int64_t expected_content_size,
                               bool embedded,
+                              int frame_tree_node_id,
                               int render_process_id,
                               int render_frame_id);