Convert //google_apis from scoped_ptr to std::unique_ptr

google_apis/gcm/engine/heartbeat_manager.cc

Index: google_apis/gcm/engine/heartbeat_manager.cc
diff --git a/google_apis/gcm/engine/heartbeat_manager.cc b/google_apis/gcm/engine/heartbeat_manager.cc
index c7ccea1f66a0ec497b5972b81cdf73d2e74d3cf9..83b9977d5b121b46155e41f08aee8464b7778693 100644
--- a/google_apis/gcm/engine/heartbeat_manager.cc
+++ b/google_apis/gcm/engine/heartbeat_manager.cc
@@ -122,7 +122,8 @@ base::TimeTicks HeartbeatManager::GetNextHeartbeatTime() const {
     return base::TimeTicks();
 }
 
-void HeartbeatManager::UpdateHeartbeatTimer(scoped_ptr<base::Timer> timer) {
+void HeartbeatManager::UpdateHeartbeatTimer(
+    std::unique_ptr<base::Timer> timer) {
   bool was_running = heartbeat_timer_->IsRunning();
   base::TimeDelta remaining_delay =
       heartbeat_timer_->desired_run_time() - base::TimeTicks::Now();