Use WeakBindingSet to manage inspector connections

mojo/public/cpp/bindings/binding.h

 // Copyright 2014 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.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_BINDING_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_BINDING_H_
 
 #include "mojo/public/c/environment/async_waiter.h"
 #include "mojo/public/cpp/bindings/error_handler.h"
 #include "mojo/public/cpp/bindings/interface_ptr.h"
@@ skipping 16 matching lines @@
 //   class FooImpl : public Foo {
 //    public:
 //     explicit FooImpl(ScopedMessagePipeHandle handle)
 //         : binding_(this, handle.Pass()) {}
 //
 //     // Foo implementation here.
 //
 //    private:
 //     Binding<Foo> binding_;
 //   };
-//
 template <typename Interface>
 class Binding : public ErrorHandler {
  public:
   using Client = typename Interface::Client;
 
   explicit Binding(Interface* impl) : impl_(impl) { stub_.set_sink(impl_); }
 
   Binding(Interface* impl,
           ScopedMessagePipeHandle handle,
           const MojoAsyncWaiter* waiter = Environment::GetDefaultAsyncWaiter())
@@ skipping 51 matching lines @@
       InterfaceRequest<Interface> request,
       const MojoAsyncWaiter* waiter = Environment::GetDefaultAsyncWaiter()) {
     Bind(request.PassMessagePipe(), waiter);
   }
 
   bool WaitForIncomingMethodCall() {
     MOJO_DCHECK(internal_router_);
     return internal_router_->WaitForIncomingMessage();
   }
 
+  void Close() {
+    MOJO_DCHECK(internal_router_);
+    internal_router_->CloseMessagePipe();
+  }
+
   void set_error_handler(ErrorHandler* error_handler) {
     error_handler_ = error_handler;
   }
 
   // ErrorHandler implementation
   void OnConnectionError() override {
     if (error_handler_)
       error_handler_->OnConnectionError();
   }
 
   Interface* impl() { return impl_; }
   Client* client() { return proxy_; }
   // Exposed for testing, should not generally be used.
   internal::Router* internal_router() { return internal_router_; }
 
  private:
   internal::Router* internal_router_ = nullptr;
   typename Client::Proxy_* proxy_ = nullptr;
   typename Interface::Stub_ stub_;
   Interface* impl_;
   ErrorHandler* error_handler_ = nullptr;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(Binding);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_BINDING_H_