Count all systems with an AMD driver and Intel GPU PCI ID as AMD switchable

content/gpu/gpu_info_collector_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/gpu/gpu_info_collector.h"
 
 #include <windows.h>
 #include <d3d9.h>
 #include <setupapi.h>
 
@@ skipping 342 matching lines @@
 
         std::string driver_vendor;
         dwcb_data = sizeof(value);
         result = RegQueryValueExW(
             key, L"ProviderName", NULL, NULL,
             reinterpret_cast<LPBYTE>(value), &dwcb_data);
         if (result == ERROR_SUCCESS) {
           driver_vendor = WideToASCII(std::wstring(value));
           if (driver_vendor == "Advanced Micro Devices, Inc." ||
               driver_vendor == "ATI Technologies Inc.") {
-            // We are conservative and assume that in the absense of a clear
-            // signal the videocard is assumed to be switchable.
+            // We are conservative and assume that in the absence of a clear
+            // signal the videocard is assumed to be switchable. Additionally,
+            // some switchable systems with Intel GPUs aren't correctly
+            // detected, so always count them.
             AMDVideoCardType amd_card_type = GetAMDVideocardType();
-            gpu_info->amd_switchable = (amd_card_type != STANDALONE);
+            gpu_info->amd_switchable = (gpu_info->gpu.vendor_id == 0x8086) ||
+                                       (amd_card_type != STANDALONE);
           }
         }
 
         gpu_info->driver_vendor = driver_vendor;
         gpu_info->driver_version = driver_version;
         gpu_info->driver_date = driver_date;
         found = true;
         RegCloseKey(key);
         break;
       }
@@ skipping 15 matching lines @@
 
   size_t pos = gl_version_string.find_last_not_of("0123456789.");
   if (pos != std::string::npos && pos < gl_version_string.length() - 1) {
     gpu_info->driver_version = gl_version_string.substr(pos + 1);
     return true;
   }
   return false;
 }
 
 }  // namespace gpu_info_collector