Add audible support to the copresence API.

components/copresence/public/copresence_client.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 COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CLIENT_H_
 #define COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CLIENT_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "components/copresence/proto/rpcs.pb.h"
 #include "components/copresence/public/copresence_client_delegate.h"
 
 namespace net {
 class URLContextGetter;
 }
 
 namespace copresence {
 
 class CopresenceClientDelegate;
 class RpcHandler;
 
 struct PendingRequest {
   PendingRequest(const copresence::ReportRequest& report,
                  const std::string app_id,
                  const StatusCallback& callback);
   ~PendingRequest();
 
   copresence::ReportRequest report;
   std::string app_id;
   StatusCallback callback;
 };
 
 // The CopresenceClient class is the central interface for Copresence
 // functionality. This class handles all the initialization and delegation of
 // copresence tasks. Any user of copresence only needs to interact with this
 // client.
-class CopresenceClient {
+class CopresenceClient : public base::SupportsWeakPtr<CopresenceClient> {
  public:
   // The delegate must outlive us.
   explicit CopresenceClient(CopresenceClientDelegate* delegate);
   virtual ~CopresenceClient();
 
   // This method will execute a report request. Each report request can have
   // multiple (un)publishes, (un)subscribes. This will ensure that once the
   // client is initialized, it sends all request to the server and handles
   // the response. If an error is encountered, the status callback is used
   // to relay it to the requester.
@@ skipping 16 matching lines @@
   size_t pending_init_operations_;
 
   scoped_ptr<RpcHandler> rpc_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(CopresenceClient);
 };
 
 }  // namespace copresence
 
 #endif  // COMPONENTS_COPRESENCE_PUBLIC_COPRESENCE_CLIENT_H_