Extend PathService::Get to be able to return the X86 program files path.

base/base_paths_win.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 "base/base_paths_win.h"
 
 #include <windows.h>
 #include <shlobj.h>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
@@ skipping 30 matching lines @@
       break;
     }
     case base::DIR_WINDOWS:
       GetWindowsDirectory(system_buffer, MAX_PATH);
       cur = FilePath(system_buffer);
       break;
     case base::DIR_SYSTEM:
       GetSystemDirectory(system_buffer, MAX_PATH);
       cur = FilePath(system_buffer);
       break;
+    case base::DIR_PROGRAM_FILESX86:
+      if (base::win::OSInfo::GetInstance()->architecture() !=
+          base::win::OSInfo::X86_ARCHITECTURE) {
+        if (FAILED(SHGetFolderPath(NULL, CSIDL_PROGRAM_FILESX86, NULL,
+                                   SHGFP_TYPE_CURRENT, system_buffer)))
+          return false;
+        cur = FilePath(system_buffer);
+        break;
+      }
+      // Fall through to base::DIR_PROGRAM_FILES if we're on an X86 machine.
     case base::DIR_PROGRAM_FILES:
       if (FAILED(SHGetFolderPath(NULL, CSIDL_PROGRAM_FILES, NULL,
                                  SHGFP_TYPE_CURRENT, system_buffer)))
         return false;
       cur = FilePath(system_buffer);
       break;
     case base::DIR_IE_INTERNET_CACHE:
       if (FAILED(SHGetFolderPath(NULL, CSIDL_INTERNET_CACHE, NULL,
                                  SHGFP_TYPE_CURRENT, system_buffer)))
         return false;
@@ skipping 57 matching lines @@
     }
     default:
       return false;
   }
 
   *result = cur;
   return true;
 }
 
 }  // namespace base