Gamepad API: add support for connection events

content/browser/renderer_host/pepper/pepper_gamepad_host.cc

 // Copyright (c) 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.
 
 #include "content/browser/renderer_host/pepper/pepper_gamepad_host.h"
 
 #include "base/bind.h"
 #include "content/browser/gamepad/gamepad_service.h"
 #include "content/public/browser/browser_ppapi_host.h"
 #include "ppapi/c/pp_errors.h"
@@ skipping 21 matching lines @@
                                      PP_Resource resource)
     : ResourceHost(host->GetPpapiHost(), instance, resource),
       browser_ppapi_host_(host),
       gamepad_service_(gamepad_service),
       is_started_(false),
       weak_factory_(this) {
 }
 
 PepperGamepadHost::~PepperGamepadHost() {
   if (is_started_)
-    gamepad_service_->RemoveConsumer();
+    gamepad_service_->RemoveConsumer(this);
 }
 
 int32_t PepperGamepadHost::OnResourceMessageReceived(
     const IPC::Message& msg,
     ppapi::host::HostMessageContext* context) {
   IPC_BEGIN_MESSAGE_MAP(PepperGamepadHost, msg)
     PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_Gamepad_RequestMemory,
                                         OnRequestMemory)
   IPC_END_MESSAGE_MAP()
   return PP_ERROR_FAILED;
 }
 
 int32_t PepperGamepadHost::OnRequestMemory(
     ppapi::host::HostMessageContext* context) {
   if (is_started_)
     return PP_ERROR_FAILED;
 
-  gamepad_service_->AddConsumer();
+  gamepad_service_->AddConsumer(this);
   is_started_ = true;
 
   // Don't send the shared memory back until the user has interacted with the
   // gamepad. This is to prevent fingerprinting and matches what the web
   // platform does.
   gamepad_service_->RegisterForUserGesture(
       base::Bind(&PepperGamepadHost::GotUserGesture,
                  weak_factory_.GetWeakPtr(),
                  context->MakeReplyMessageContext()));
   return PP_OK_COMPLETIONPENDING;
 }
 
 void PepperGamepadHost::GotUserGesture(
     const ppapi::host::ReplyMessageContext& context) {
   base::SharedMemoryHandle handle =
       gamepad_service_->GetSharedMemoryHandleForProcess(
           browser_ppapi_host_->GetPluginProcessHandle());
 
   context.params.AppendHandle(ppapi::proxy::SerializedHandle(
       handle, sizeof(ppapi::ContentGamepadHardwareBuffer)));
   host()->SendReply(context, PpapiPluginMsg_Gamepad_SendMemory());
 }
 
 }  // namespace content