Invalidate WeakPtrs of ResourceMessageFilter on channel shutdown

content/browser/loader/async_resource_handler_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/loader/async_resource_handler.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <memory>
 #include <string>
@@ skipping 124 matching lines @@
   std::vector<std::unique_ptr<IPC::Message>> messages_;
 };
 
 class AsyncResourceHandlerTest : public ::testing::Test,
                                  public ResourceLoaderDelegate {
  protected:
   AsyncResourceHandlerTest()
       : thread_bundle_(TestBrowserThreadBundle::IO_MAINLOOP), context_(true) {}
 
   void TearDown() override {
+    if (filter_)
+      filter_->OnChannelClosing();
     // Prevent memory leaks.
     filter_ = nullptr;
     rdh_.Shutdown();
     base::RunLoop().RunUntilIdle();
   }
 
   void CreateRequestWithResponseDataSize(size_t response_data_size) {
     test_job_factory_.SetProtocolHandler(
         "test", base::MakeUnique<TestProtocolHandler>(response_data_size));
     context_.set_job_factory(&test_job_factory_);
@@ skipping 146 matching lines @@
 
   encoded_data_length = std::get<3>(params);
   EXPECT_EQ(32768, encoded_data_length);
   encoded_body_length = std::get<4>(params);
   EXPECT_EQ(32768, encoded_body_length);
 }
 
 }  // namespace
 
 }  // namespace content