Remove implicit conversions from scoped_refptr to T* in content/*/gpu/

content/gpu/gpu_main.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 <stdlib.h>
 
 #if defined(OS_WIN)
 #include <dwmapi.h>
 #include <windows.h>
 #endif
@@ skipping 330 matching lines @@
                                                     dead_on_arrival,
                                                     gpu_info,
                                                     deferred_messages.Get());
   while (!deferred_messages.Get().empty())
     deferred_messages.Get().pop();
 
   child_thread->Init(start_time);
 
   gpu_process.set_main_thread(child_thread);
 
-  if (watchdog_thread)
+  if (watchdog_thread.get())
     watchdog_thread->AddPowerObserver();
 
   {
     TRACE_EVENT0("gpu", "Run Message Loop");
     main_message_loop.Run();
   }
 
   child_thread->StopWatchdog();
 
   return 0;
@@ skipping 150 matching lines @@
     return true;
   }
 
   return false;
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace.
 
 }  // namespace content