[IndexedDB] Closing mojo connections when renderer quits

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 2012 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1182 matching lines @@
       new SynchronousCompositorBrowserFilter(GetID());
   AddFilter(synchronous_compositor_filter_.get());
 #endif
 }
 
 void RenderProcessHostImpl::RegisterMojoInterfaces() {
   auto registry = base::MakeUnique<service_manager::InterfaceRegistry>(
       service_manager::mojom::kServiceManager_ConnectorSpec);
 
   channel_->AddAssociatedInterfaceForIOThread(
-      base::Bind(&IndexedDBDispatcherHost::AddBinding, indexed_db_factory_));
+      base::Bind(&IndexedDBDispatcherHost::AddBinding,
+                 base::Unretained(indexed_db_factory_.get())));
+  AddObserver(indexed_db_factory_.get());
 
 #if defined(OS_ANDROID)
   AddUIThreadInterface(registry.get(),
                        GetGlobalJavaInterfaces()
                            ->CreateInterfaceFactory<device::BatteryMonitor>());
   AddUIThreadInterface(
       registry.get(), GetGlobalJavaInterfaces()
                           ->CreateInterfaceFactory<
                               shape_detection::mojom::FaceDetectionProvider>());
   AddUIThreadInterface(
@@ skipping 1857 matching lines @@
   LOG(ERROR) << "Terminating render process for bad Mojo message: " << error;
 
   // The ReceivedBadMessage call below will trigger a DumpWithoutCrashing.
   // Capture the error message in a crash key value.
   base::debug::ScopedCrashKey error_key_value("mojo-message-error", error);
   bad_message::ReceivedBadMessage(render_process_id,
                                   bad_message::RPH_MOJO_PROCESS_ERROR);
 }
 
 }  // namespace content