| Index: content/browser/gpu/browser_gpu_channel_host_factory.cc | 
| diff --git a/content/browser/gpu/browser_gpu_channel_host_factory.cc b/content/browser/gpu/browser_gpu_channel_host_factory.cc | 
| index 9edb9677c56abc2b4801d5aa62193d362236b95c..7625449b9468f05598541ffdb3e95b4e81518a09 100644 | 
| --- a/content/browser/gpu/browser_gpu_channel_host_factory.cc | 
| +++ b/content/browser/gpu/browser_gpu_channel_host_factory.cc | 
| @@ -244,6 +244,7 @@ void BrowserGpuChannelHostFactory::Terminate() { | 
| // static | 
| void BrowserGpuChannelHostFactory::EnableGpuMemoryBufferFactoryUsage( | 
| gfx::GpuMemoryBuffer::Usage usage) { | 
| +  DCHECK_EQ(g_enabled_gpu_memory_buffer_usages.Get().count(usage), 0u); | 
| g_enabled_gpu_memory_buffer_usages.Get().insert(usage); | 
| } | 
|  | 
|  |