Navigation transitions: Block first response until after transitions have run.

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index a0be1cf20a767c45a6879480478f803a08432735..973fe8210433b81f60359600a7e514205a3ea8ef 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -129,6 +129,8 @@ class CONTENT_EXPORT RenderProcessHostImpl
 #endif
   virtual void ResumeDeferredNavigation(const GlobalRequestID& request_id)

[jam, 2014/06/11 02:00:21]

i think you copied the pattern for this one by putting it in the virtual
section. i see that the only caller to this is inside content. if you can move
this to RenderProcessHostImpl as a method and out of RenderProcessHost interface
with the change below, that would be great

[shatch, 2014/06/14 00:41:37]

Done.

       OVERRIDE;
+  virtual void ResumeResponseDeferredAtStart(
+      const GlobalRequestID& request_id) OVERRIDE;

[jam, 2014/06/11 02:00:21]

this isn't overridding a method from the interface (which makes sense, since
it's not called by chrome), so put this as a non-virtual method

[shatch, 2014/06/14 00:41:37]

Done.

   virtual void NotifyTimezoneChange() OVERRIDE;
 
   // IPC::Sender via RenderProcessHost.