Invalidate WeakPtrs of ResourceMessageFilter on channel shutdown

content/browser/loader/async_resource_handler_unittest.cc

Index: content/browser/loader/async_resource_handler_unittest.cc
diff --git a/content/browser/loader/async_resource_handler_unittest.cc b/content/browser/loader/async_resource_handler_unittest.cc
index b86d2957c40a8142331374fcb07bcf2a210137c3..9662afd54b75bb039394a478e6677e270ab806e0 100644
--- a/content/browser/loader/async_resource_handler_unittest.cc
+++ b/content/browser/loader/async_resource_handler_unittest.cc
@@ -142,6 +142,8 @@ class AsyncResourceHandlerTest : public ::testing::Test,
       : thread_bundle_(TestBrowserThreadBundle::IO_MAINLOOP), context_(true) {}
 
   void TearDown() override {
+    if (filter_)
+      filter_->OnChannelClosing();
     // Prevent memory leaks.
     filter_ = nullptr;
     rdh_.Shutdown();