To narrow down LowBox/AppContainer launch issue reporting UMA on specific create process error code.

content/common/sandbox_win.cc

 // Copyright (c) 2012 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/common/sandbox_win.h"
 
 #include <string>
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
@@ skipping 718 matching lines @@
                policy, &temp_process_info);
   DWORD last_error = ::GetLastError();
   policy->Release();
   base::win::ScopedProcessInformation target(temp_process_info);
 
   TRACE_EVENT_END_ETW("StartProcessWithAccess::LAUNCHPROCESS", 0, 0);
 
   if (sandbox::SBOX_ALL_OK != result) {
     if (result == sandbox::SBOX_ERROR_GENERIC)
       DPLOG(ERROR) << "Failed to launch process";
-    else
+    else if (result == sandbox::SBOX_ERROR_CREATE_PROCESS) {
+      // TODO(shrikant): Remove this special case handling after determining
+      // cause for lowbox/createprocess errors.
+      sandbox::PolicyBase* policy_base =
+          static_cast<sandbox::PolicyBase*>(policy);
+      if (policy_base->GetLowBoxSid()) {
+        UMA_HISTOGRAM_SPARSE_SLOWLY("Process.Sandbox.Lowbox.Launch.Error",
+                                    last_error);
+      }
+    } else
       DLOG(ERROR) << "Failed to launch process. Error: " << result;
-
-    sandbox::PolicyBase* policy_base =
-        static_cast<sandbox::PolicyBase*>(policy);
-    if (policy_base->GetLowBoxSid()) {
-      UMA_HISTOGRAM_SPARSE_SLOWLY("Process.Sandbox.Lowbox.Launch.Error",
-                                  last_error);
-    }
     return base::Process();
   }
 
   if (delegate)
     delegate->PostSpawnTarget(target.process_handle());
 
   CHECK(ResumeThread(target.thread_handle()) != -1);
   TRACE_EVENT_END_ETW("StartProcessWithAccess", 0, type_str);
   return base::Process(target.TakeProcessHandle());
 }
@@ skipping 30 matching lines @@
   }
 
   return false;
 }
 
 bool BrokerAddTargetPeer(HANDLE peer_process) {
   return g_broker_services->AddTargetPeer(peer_process) == sandbox::SBOX_ALL_OK;
 }
 
 }  // namespace content