Remove calls to MessageLoop::current() in content.

device/gamepad/gamepad_provider.cc

Index: device/gamepad/gamepad_provider.cc
diff --git a/device/gamepad/gamepad_provider.cc b/device/gamepad/gamepad_provider.cc
index dded2673f8ce9de6d318d732cf14cee696b2ddde..c37c38a7dbc78ccaca92b5df5c3fa2ccfbbc87b0 100644
--- a/device/gamepad/gamepad_provider.cc
+++ b/device/gamepad/gamepad_provider.cc
@@ -159,7 +159,7 @@ void GamepadProvider::Initialize(std::unique_ptr<GamepadDataFetcher> fetcher) {
 
 void GamepadProvider::DoInitializePollingThread(
     std::unique_ptr<GamepadDataFetcher> fetcher) {
-  DCHECK(base::MessageLoop::current() == polling_thread_->message_loop());
+  DCHECK(polling_thread_->task_runner()->BelongsToCurrentThread());
   DCHECK(!data_fetcher_.get());  // Should only initialize once.
 
   if (!fetcher)
@@ -168,7 +168,7 @@ void GamepadProvider::DoInitializePollingThread(
 }
 
 void GamepadProvider::SendPauseHint(bool paused) {
-  DCHECK(base::MessageLoop::current() == polling_thread_->message_loop());
+  DCHECK(polling_thread_->task_runner()->BelongsToCurrentThread());
   if (data_fetcher_)
     data_fetcher_->PauseHint(paused);
 }
@@ -207,7 +207,7 @@ void GamepadProvider::PadState::AsWebGamepad(WebGamepad* pad) {
 }
 
 void GamepadProvider::DoPoll() {
-  DCHECK(base::MessageLoop::current() == polling_thread_->message_loop());
+  DCHECK(polling_thread_->task_runner()->BelongsToCurrentThread());
   DCHECK(have_scheduled_do_poll_);
   have_scheduled_do_poll_ = false;
 
@@ -256,7 +256,7 @@ void GamepadProvider::DoPoll() {
 }
 
 void GamepadProvider::ScheduleDoPoll() {
-  DCHECK(base::MessageLoop::current() == polling_thread_->message_loop());
+  DCHECK(polling_thread_->task_runner()->BelongsToCurrentThread());
   if (have_scheduled_do_poll_)
     return;