| Index: content/browser/gpu/gpu_data_manager_impl_private.cc
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| diff --git a/content/browser/gpu/gpu_data_manager_impl_private.cc b/content/browser/gpu/gpu_data_manager_impl_private.cc
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| index 513a1d5d836f8434f3bf15c8f9cabc6a09fb8efb..edbb3aa35f1c802f21dfc1f9986575603cf95983 100644
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| --- a/content/browser/gpu/gpu_data_manager_impl_private.cc
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| +++ b/content/browser/gpu/gpu_data_manager_impl_private.cc
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| @@ -1022,6 +1022,12 @@ GpuDataManagerImplPrivate::GpuDataManagerImplPrivate(
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|    CGGetActiveDisplayList (0, NULL, &display_count_);
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|    CGDisplayRegisterReconfigurationCallback(DisplayReconfigCallback, owner_);
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|  #endif  // OS_MACOSX
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| +
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| +  // For testing only.
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| +  if (command_line->HasSwitch(
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| +          switches::kDisableDomainBlockingFor3DAPIsForTesting)) {
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| +    domain_blocking_enabled_ = false;
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| +  }
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|  }
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|  
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|  GpuDataManagerImplPrivate::~GpuDataManagerImplPrivate() {
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| 
 |