Removing useless Win7 checks + standardize its use

chrome/browser/ui/pdf/adobe_reader_info_win.cc

 // Copyright 2014 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 "chrome/browser/ui/pdf/adobe_reader_info_win.h"
 
 #include <shlwapi.h>
 #include <stddef.h>
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/file_version_info.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/version.h"
 #include "base/win/registry.h"
-#include "base/win/windows_version.h"
 #include "chrome/browser/browser_process.h"
 
 namespace {
 
 // Hardcoded value for the secure version of Acrobat Reader.
 const char kSecureVersion[] = "11.0.8.4";
 
 const base::char16 kRegistryAcrobat[] = L"Acrobat.exe";
 const base::char16 kRegistryAcrobatReader[] = L"AcroRd32.exe";
 const base::char16 kRegistryApps[] =
     L"Software\\Microsoft\\Windows\\CurrentVersion\\App Paths";
 const base::char16 kRegistryPath[] = L"Path";
 
 // Gets the installed path for a registered app.
 base::FilePath GetInstalledPath(const base::char16* app) {
   base::string16 reg_path(kRegistryApps);
   reg_path.append(L"\\");
   reg_path.append(app);
 
   base::FilePath filepath;
   base::win::RegKey hkcu_key(HKEY_CURRENT_USER, reg_path.c_str(), KEY_READ);
   base::string16 path;
-  // As of Win7 AppPaths can also be registered in HKCU: http://goo.gl/UgFOf.
-  if (base::win::GetVersion() >= base::win::VERSION_WIN7 &&
-      hkcu_key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS) {
+  // AppPaths can also be registered in HKCU: http://goo.gl/UgFOf.
+  if (hkcu_key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS) {
     filepath = base::FilePath(path);
   } else {
     base::win::RegKey hklm_key(HKEY_LOCAL_MACHINE, reg_path.c_str(), KEY_READ);
     if (hklm_key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS) {
       filepath = base::FilePath(path);
     }
   }
   return filepath.Append(app);
 }
 
@@ skipping 41 matching lines @@
   // Convert 1.2.03.45 to 1.2.3.45 so base::Version considers it as valid.
   for (int i = 1; i <= 9; ++i) {
     std::string from = base::StringPrintf(".0%d", i);
     std::string to = base::StringPrintf(".%d", i);
     base::ReplaceSubstringsAfterOffset(&reader_version, 0, from, to);
   }
   base::Version file_version(reader_version);
   return file_version.IsValid() &&
     file_version >= base::Version(kSecureVersion);
 }