Have the unload event execute in background on cross-site navigations

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 2f1040aaa9647f5a2fd25719597d2b89178547a1..7df49a27d48ba4e357125aa19d567b85d6614d01 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -16,7 +16,6 @@
 #include "content/browser/child_process_launcher.h"
 #include "content/browser/power_monitor_message_broadcaster.h"
 #include "content/common/content_export.h"
-#include "content/public/browser/global_request_id.h"
 #include "content/public/browser/gpu_data_manager_observer.h"
 #include "content/public/browser/render_process_host.h"
 #include "ipc/ipc_channel_proxy.h"
@@ -118,6 +117,8 @@ class CONTENT_EXPORT RenderProcessHostImpl
   virtual base::TimeDelta GetChildProcessIdleTime() const OVERRIDE;
   virtual void SurfaceUpdated(int32 surface_id) OVERRIDE;
   virtual void ResumeRequestsForView(int route_id) OVERRIDE;
+  virtual void ResumeDeferredNavigation(
+      const GlobalRequestID& request_id) OVERRIDE;
 
   // IPC::Sender via RenderProcessHost.
   virtual bool Send(IPC::Message* msg) OVERRIDE;
@@ -132,10 +133,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
 
   scoped_refptr<AudioRendererHost> audio_renderer_host() const;
 
-  // Tells the ResourceDispatcherHost to resume a deferred navigation without
-  // transferring it to a new renderer process.
-  void ResumeDeferredNavigation(const GlobalRequestID& request_id);
-
   // Call this function when it is evident that the child process is actively
   // performing some operation, for example if we just received an IPC message.
   void mark_child_process_activity_time() {