Remove detach_ as publicly exposed method of Event

chrome/renderer/extensions/event_unittest.cc

Index: chrome/renderer/extensions/event_unittest.cc
diff --git a/chrome/renderer/extensions/event_unittest.cc b/chrome/renderer/extensions/event_unittest.cc
index a7d319fcff04029896244aa1da16a24fa546d034..729f5256ca79b2cea5b5677c7a8b1b1acff538a6 100644
--- a/chrome/renderer/extensions/event_unittest.cc
+++ b/chrome/renderer/extensions/event_unittest.cc
@@ -204,7 +204,7 @@ TEST_F(EventUnittest, DetachFilteredEvent) {
       "var filters = {url: [{hostSuffix: 'google.com'}]};"
       "e.addListener(cb1, filters);"
       "e.addListener(cb2, filters);"
-      "e.detach_();"
+      "privates(e).impl.detach_();"
       "assert.AssertFalse(bindings.HasFilteredListener('myevent'));");
   module_system_->Require("test");
 }