Propagate opener to BackgroundsContents.

chrome/browser/chromeos/first_run/drive_first_run_controller.cc

Index: chrome/browser/chromeos/first_run/drive_first_run_controller.cc
diff --git a/chrome/browser/chromeos/first_run/drive_first_run_controller.cc b/chrome/browser/chromeos/first_run/drive_first_run_controller.cc
index b69a68859675b7daa28a7ffcdd0944ccd015f911..dbcb75080f0429e94d1db3ebcb7a955118f06e09 100644
--- a/chrome/browser/chromeos/first_run/drive_first_run_controller.cc
+++ b/chrome/browser/chromeos/first_run/drive_first_run_controller.cc
@@ -163,6 +163,7 @@ class DriveWebContentsManager : public content::WebContentsObserver,
   // content::WebContentsDelegate overrides:
   bool ShouldCreateWebContents(
       content::WebContents* web_contents,
+      content::RenderFrameHost* opener,
       content::SiteInstance* source_site_instance,
       int32_t route_id,
       int32_t main_frame_route_id,
@@ -276,6 +277,7 @@ void DriveWebContentsManager::DidFailLoad(
 
 bool DriveWebContentsManager::ShouldCreateWebContents(
     content::WebContents* web_contents,
+    content::RenderFrameHost* opener,
     content::SiteInstance* source_site_instance,
     int32_t route_id,
     int32_t main_frame_route_id,
@@ -310,7 +312,7 @@ bool DriveWebContentsManager::ShouldCreateWebContents(
   // so we must not use |route_id|, etc, which are IDs in a different process.
   BackgroundContents* contents =
       background_contents_service->CreateBackgroundContents(
-          content::SiteInstance::Create(profile_), MSG_ROUTING_NONE,
+          content::SiteInstance::Create(profile_), nullptr, MSG_ROUTING_NONE,
           MSG_ROUTING_NONE, MSG_ROUTING_NONE, profile_, frame_name,
           base::ASCIIToUTF16(app_id_), partition_id, session_storage_namespace);