Fix JavaScript alerts from frames with oopif on, after a cross-process click.

content/browser/frame_host/render_frame_host_manager.cc

Index: content/browser/frame_host/render_frame_host_manager.cc
diff --git a/content/browser/frame_host/render_frame_host_manager.cc b/content/browser/frame_host/render_frame_host_manager.cc
index d8216c4d4a4554aea7919fd6436802393ca99832..d1e644c0cd75d8ebcc619f2a7a28d5771cc55152 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -633,8 +633,7 @@ void RenderFrameHostManager::SwapOutOldFrame(
   // Tell the renderer to suppress any further modal dialogs so that we can swap
   // it out.  This must be done before canceling any current dialog, in case
   // there is a loop creating additional dialogs.
-  // TODO(creis): Handle modal dialogs in subframe processes.
-  old_render_frame_host->render_view_host()->SuppressDialogsUntilSwapOut();
+  old_render_frame_host->SuppressFurtherDialogs();
 
   // Now close any modal dialogs that would prevent us from swapping out.  This
   // must be done separately from SwapOut, so that the PageGroupLoadDeferrer is