Clean up old Mojo type for mojom::ContentDecryptionModuleClient

This CL cleans up old mojo types for mojom::ContentDecryptionModuleClient
using AssociatedReceiver.

Bug: 955171
Change-Id: I4759d6f44fbd8a4dcc78659b316c660cba603ba5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1903229Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Reviewed-by: Ken Rockot <rockot@google.com>
Commit-Queue: Julie Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#714061}

media/mojo/clients/mojo_cdm.cc

@@ -69,7 +69,6 @@ MojoCdm::MojoCdm(mojo::PendingRemote<mojom::ContentDecryptionModule> remote_cdm,
                  const SessionExpirationUpdateCB& session_expiration_update_cb)
     : remote_cdm_(std::move(remote_cdm)),
       interface_factory_(interface_factory),
-      client_binding_(this),
       cdm_id_(CdmContext::kInvalidCdmId),
       session_message_cb_(session_message_cb),
       session_closed_cb_(session_closed_cb),
@@ -81,9 +80,7 @@ MojoCdm::MojoCdm(mojo::PendingRemote<mojom::ContentDecryptionModule> remote_cdm,
   DCHECK(session_keys_change_cb_);
   DCHECK(session_expiration_update_cb_);
 
-  mojom::ContentDecryptionModuleClientAssociatedPtrInfo client_ptr_info;
-  client_binding_.Bind(mojo::MakeRequest(&client_ptr_info));
-  remote_cdm_->SetClient(std::move(client_ptr_info));
+  remote_cdm_->SetClient(client_receiver_.BindNewEndpointAndPassRemote());
 }
 
 MojoCdm::~MojoCdm() {

media/mojo/clients/mojo_cdm.h

@@ -21,8 +21,7 @@
 #include "media/base/cdm_session_tracker.h"
 #include "media/base/content_decryption_module.h"
 #include "media/mojo/mojom/content_decryption_module.mojom.h"
-#include "mojo/public/cpp/bindings/associated_binding.h"
-#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/associated_receiver.h"
 #include "mojo/public/cpp/bindings/pending_remote.h"
 #include "mojo/public/cpp/bindings/remote.h"
 
@@ -142,7 +141,8 @@ class MojoCdm : public ContentDecryptionModule,
 
   mojo::Remote<mojom::ContentDecryptionModule> remote_cdm_;
   mojom::InterfaceFactory* interface_factory_;
-  mojo::AssociatedBinding<ContentDecryptionModuleClient> client_binding_;
+  mojo::AssociatedReceiver<ContentDecryptionModuleClient> client_receiver_{
+      this};
 
   // Protects |cdm_id_|, |decryptor_ptr_|, |decryptor_| and
   // |decryptor_task_runner_| which could be accessed from other threads.