Resume a backgrounded renderer that was purged and suspended

content/public/browser/render_process_host.h

Index: content/public/browser/render_process_host.h
diff --git a/content/public/browser/render_process_host.h b/content/public/browser/render_process_host.h
index ef58b64c9736c2da687203e7fae275b0dc197d8a..c9588efcaf41edb81b7946687dd9da3759eef803 100644
--- a/content/public/browser/render_process_host.h
+++ b/content/public/browser/render_process_host.h
@@ -320,6 +320,9 @@ class CONTENT_EXPORT RenderProcessHost : public IPC::Sender,
   // Purges and suspends the renderer process.
   virtual void PurgeAndSuspend() = 0;
 
+  // Resumes the renderer process.
+  virtual void Resume() = 0;
+
   // Acquires the |mojom::Renderer| interface to the render process. This is for
   // internal use only, and is only exposed here to support
   // MockRenderProcessHost usage in tests.