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

content/browser/devtools/devtools_system_info_handler.cc

Index: content/browser/devtools/devtools_system_info_handler.cc
diff --git a/content/browser/devtools/devtools_system_info_handler.cc b/content/browser/devtools/devtools_system_info_handler.cc
index 15261b3e466e5fa343149eecfa5b0000b97a622b..afcba28e16072fa1adc121e317692dc80ae72aef 100644
--- a/content/browser/devtools/devtools_system_info_handler.cc
+++ b/content/browser/devtools/devtools_system_info_handler.cc
@@ -101,6 +101,8 @@
 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;
 
@@ -124,6 +126,8 @@
   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);
 }