Gamepad API: add support for connection events

content/browser/renderer_host/gamepad_browser_message_filter.cc

Index: content/browser/renderer_host/gamepad_browser_message_filter.cc
diff --git a/content/browser/renderer_host/gamepad_browser_message_filter.cc b/content/browser/renderer_host/gamepad_browser_message_filter.cc
index cd36e6ac5e8f6632bd57b8e106a5036e92894b52..d56a8865a0deda05d11784c4f107b11ce6b5435e 100644
--- a/content/browser/renderer_host/gamepad_browser_message_filter.cc
+++ b/content/browser/renderer_host/gamepad_browser_message_filter.cc
@@ -9,15 +9,16 @@
 
 namespace content {
 
-GamepadBrowserMessageFilter::GamepadBrowserMessageFilter()
+GamepadBrowserMessageFilter::GamepadBrowserMessageFilter(IPC::Sender* sender)
     : BrowserMessageFilter(GamepadMsgStart),
+      sender_(sender),
       is_started_(false) {
 }
 
 GamepadBrowserMessageFilter::~GamepadBrowserMessageFilter() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   if (is_started_)
-    GamepadService::GetInstance()->RemoveConsumer();
+    GamepadService::GetInstance()->RemoveConsumer(this);
 }
 
 bool GamepadBrowserMessageFilter::OnMessageReceived(
@@ -34,12 +35,26 @@ bool GamepadBrowserMessageFilter::OnMessageReceived(
   return handled;
 }
 
+void GamepadBrowserMessageFilter::OnGamepadConnected(
+    unsigned index,
+    const blink::WebGamepad& web_gamepad) {
+  sender_->Send(new GamepadMsg_GamepadConnected(
+      GamepadConnectionEventMessageParams(index, web_gamepad)));
+}
+
+void GamepadBrowserMessageFilter::OnGamepadDisconnected(
+    unsigned index,
+    const blink::WebGamepad& web_gamepad) {
+  sender_->Send(new GamepadMsg_GamepadDisconnected(
+      GamepadConnectionEventMessageParams(index, web_gamepad)));
+}
+
 void GamepadBrowserMessageFilter::OnGamepadStartPolling(
     base::SharedMemoryHandle* renderer_handle) {
   GamepadService* service = GamepadService::GetInstance();
   if (!is_started_) {
     is_started_ = true;
-    service->AddConsumer();
+    service->AddConsumer(this);
     *renderer_handle = service->GetSharedMemoryHandleForProcess(PeerHandle());
   } else {
     // Currently we only expect the renderer to tell us once to start.
@@ -52,7 +67,7 @@ void GamepadBrowserMessageFilter::OnGamepadStopPolling() {
   // arrive anyway if the renderer crashes, etc.
   if (is_started_) {
     is_started_ = false;
-    GamepadService::GetInstance()->RemoveConsumer();
+    GamepadService::GetInstance()->RemoveConsumer(this);
   } else {
     NOTREACHED();
   }