Revert of Revert of Add logs to debug a flakiness on GPU Mac bots.

content/browser/devtools/devtools_system_info_handler.cc

 // Copyright 2013 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/devtools/devtools_system_info_handler.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/values.h"
 #include "content/browser/devtools/devtools_protocol_constants.h"
@@ skipping 83 matching lines @@
                          base::Bind(&DevToolsSystemInfoHandler::OnGetInfo,
                                     base::Unretained(this)));
 }
 
 DevToolsSystemInfoHandler::~DevToolsSystemInfoHandler() {
 }
 
 scoped_refptr<DevToolsProtocol::Response>
 DevToolsSystemInfoHandler::OnGetInfo(
     scoped_refptr<DevToolsProtocol::Command> command) {
+  VLOG(2) << "DevToolsSystemInfoHandler::OnGetInfo() : BEGIN";
+
   gpu::GPUInfo gpu_info = GpuDataManagerImpl::GetInstance()->GetGPUInfo();
   base::DictionaryValue* gpu_dict = new base::DictionaryValue;
 
   base::ListValue* devices = new base::ListValue;
   devices->Append(GPUDeviceToDictionary(gpu_info.gpu));
   for (size_t ii = 0; ii < gpu_info.secondary_gpus.size(); ++ii) {
     devices->Append(GPUDeviceToDictionary(gpu_info.secondary_gpus[ii]));
   }
   gpu_dict->Set(kDevices, devices);
 
   base::DictionaryValue* aux_attributes = new base::DictionaryValue;
   AuxGPUInfoEnumerator enumerator(aux_attributes);
   gpu_info.EnumerateFields(&enumerator);
   gpu_dict->Set(kAuxAttributes, aux_attributes);
 
   gpu_dict->Set(kFeatureStatus,  GetFeatureStatus());
 
   gpu_dict->Set(kDriverBugWorkarounds, GetDriverBugWorkarounds());
 
   base::DictionaryValue* system_dict = new base::DictionaryValue;
   system_dict->SetString(kModelName, gpu_info.machine_model_name);
   system_dict->SetString(kModelVersion, gpu_info.machine_model_version);
   system_dict->Set(kGPU, gpu_dict);
+
+  VLOG(2) << "DevToolsSystemInfoHandler::OnGetInfo() : END";
   return command->SuccessResponse(system_dict);
 }
 
 }  // namespace content