Implement DeviceOrientation API on Windows

content/browser/device_orientation/provider_impl.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/device_orientation/provider_impl.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 206 matching lines @@
     Stop();
 }
 
 void ProviderImpl::Start(DeviceData::Type type) {
   DCHECK(MessageLoop::current() == creator_loop_);
   DCHECK(!polling_thread_);
 
   polling_thread_ = new PollingThread("Device data polling thread",
                                       weak_factory_.GetWeakPtr(),
                                       creator_loop_);
+#if defined(OS_WIN)
+  polling_thread_->init_com_with_mta(true);
+#endif
   if (!polling_thread_->Start()) {
     LOG(ERROR) << "Failed to start device data polling thread";
     delete polling_thread_;
     polling_thread_ = NULL;
     return;
   }
   ScheduleInitializePollingThread(type);
 }
 
 void ProviderImpl::Stop() {
@@ skipping 47 matching lines @@
         observers_.erase(current);
     }
 
     if (observers_.empty())
       Stop();
   }
 }
 
 
 }  // namespace content