PlzNavigate: Get StreamPrivate API to work.

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc

Index: chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
diff --git a/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc b/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
index bc8d974c05a46b49907bab0b74e34a4ce9f95984..88850493d2f77369a5a4c2fb0eb90a1f88c72cee 100644
--- a/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
+++ b/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
@@ -181,15 +181,13 @@ void UpdatePrerenderNetworkBytesCallback(content::WebContents* web_contents,
 void SendExecuteMimeTypeHandlerEvent(
     std::unique_ptr<content::StreamInfo> stream,
     int64_t expected_content_size,
-    int render_process_id,
-    int render_frame_id,
     const std::string& extension_id,
     const std::string& view_id,
-    bool embedded) {
+    bool embedded,
+    const ResourceRequestInfo::WebContentsGetter& web_contents_getter) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
-  content::WebContents* web_contents =
-      tab_util::GetWebContentsByFrameID(render_process_id, render_frame_id);
+  content::WebContents* web_contents = web_contents_getter.Run();
   if (!web_contents)
     return;
 
@@ -208,9 +206,9 @@ void SendExecuteMimeTypeHandlerEvent(
   StreamsPrivateAPI* streams_private = StreamsPrivateAPI::Get(profile);
   if (!streams_private)
     return;
-  streams_private->ExecuteMimeTypeHandler(
-      extension_id, web_contents, std::move(stream), view_id,
-      expected_content_size, embedded, render_process_id, render_frame_id);
+  streams_private->ExecuteMimeTypeHandler(extension_id, web_contents,
+                                          std::move(stream), view_id,
+                                          expected_content_size, embedded);
 }
 #endif  // !defined(ENABLE_EXTENSIONS)
 
@@ -722,9 +720,9 @@ void ChromeResourceDispatcherHostDelegate::OnStreamCreated(
   content::BrowserThread::PostTask(
       content::BrowserThread::UI, FROM_HERE,
       base::Bind(&SendExecuteMimeTypeHandlerEvent, base::Passed(&stream),
-                 request->GetExpectedContentSize(), info->GetChildID(),
-                 info->GetRenderFrameID(), ix->second.extension_id,
-                 ix->second.view_id, embedded));
+                 request->GetExpectedContentSize(), ix->second.extension_id,
+                 ix->second.view_id, embedded,
+                 info->GetWebContentsGetterForRequest()));
   stream_target_info_.erase(request);
 #endif
 }