Revert 37989 - unit test failed on Mac builder despite passing on try server...

chrome/browser/geolocation/empty_device_data_provider.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_
 #define CHROME_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_
 
 #include "chrome/browser/geolocation/device_data_provider.h"
 
 // An implementation of DeviceDataProviderImplBase that does not provide any
 // data. Used on platforms where a given data type is not available.
 
 template<typename DataType>
 class EmptyDeviceDataProvider : public DeviceDataProviderImplBase<DataType> {
  public:
   EmptyDeviceDataProvider() {}
   virtual ~EmptyDeviceDataProvider() {}
 
   // DeviceDataProviderImplBase implementation
   virtual bool StartDataProvider() { return true; }
   virtual bool GetData(DataType *data) {
-    DCHECK(data);
+    assert(data);
     // This is all the data we can get - nothing.
     return true;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(EmptyDeviceDataProvider);
 };
 
 #endif  // CHROME_BROWSER_GEOLOCATION_EMPTY_DEVICE_DATA_PROVIDER_H_