memory coordinator: Resume suspended renderer on NORMAL state change

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index 3b29f8ec1fbf595ba8fed051b322689962e87176..0937845ebba63a6a01c9af6558432c6e2e77cde1 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -506,6 +506,9 @@ class CONTENT_EXPORT RenderThreadImpl
   // Purges memory and suspends the renderer.
   void SuspendRenderer();
 
+  // Resumes the renderer if it is suspended.
+  void ResumeRenderer();
+
   // base::MemoryCoordinatorClient implementation:
   void OnMemoryStateChange(base::MemoryState state) override;