Check if the RenderView is alive before setting the plugin find handler

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 9178bd1bba71ae6ba8097fdb1028dddb0b78445b..c1ff080e4af75f478e606d5e00d9d4638b77cbad 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -663,7 +663,7 @@ v8::Local<v8::Context> PepperPluginInstanceImpl::GetMainWorldContext() {
 void PepperPluginInstanceImpl::Delete() {
   is_deleted_ = true;
 
-  if (render_frame_ &&
+  if (render_frame_ && render_frame_->render_view() &&
       render_frame_->render_view()->plugin_find_handler() == this) {
     render_frame_->render_view()->set_plugin_find_handler(NULL);
   }