Revert of Cleanup: Remove unneeded SSE2 checks and unused code.

chrome/browser/ui/startup/obsolete_system_infobar_delegate.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 "chrome/browser/ui/startup/obsolete_system_infobar_delegate.h"
 
+#include "base/cpu.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/infobars/core/infobar.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_MACOSX)
 #include "chrome/browser/mac/obsolete_system.h"
 #endif
 
 // static
 void ObsoleteSystemInfoBarDelegate::Create(InfoBarService* infobar_service) {
 #if defined(OS_MACOSX)
   if (!ObsoleteSystemMac::Is32BitObsoleteNowOrSoon() ||
       !ObsoleteSystemMac::Has32BitOnlyCPU()) {
     return;
   }
-  infobar_service->AddInfoBar(ConfirmInfoBarDelegate::CreateInfoBar(
-      scoped_ptr<ConfirmInfoBarDelegate>(new ObsoleteSystemInfoBarDelegate())));
+#elif defined(OS_WIN)
+  // On Windows we no longer support non-SSE2 machines since Chrome 35.
+  if (base::CPU().has_sse2())
+    return;
 #else
   // No other platforms currently show this infobar.
   return;
 #endif
+
+  infobar_service->AddInfoBar(ConfirmInfoBarDelegate::CreateInfoBar(
+      scoped_ptr<ConfirmInfoBarDelegate>(new ObsoleteSystemInfoBarDelegate())));
 }
 
 ObsoleteSystemInfoBarDelegate::ObsoleteSystemInfoBarDelegate()
     : ConfirmInfoBarDelegate() {
 }
 
 ObsoleteSystemInfoBarDelegate::~ObsoleteSystemInfoBarDelegate() {
 }
 
 base::string16 ObsoleteSystemInfoBarDelegate::GetMessageText() const {
 #if defined(OS_MACOSX)
   return ObsoleteSystemMac::LocalizedObsoleteSystemString();
+#elif defined(OS_WIN)
+  return l10n_util::GetStringUTF16(IDS_WIN_SSE_OBSOLETE_NOW);
 #else
   return l10n_util::GetStringUTF16(IDS_SYSTEM_OBSOLETE_MESSAGE);
 #endif
 }
 
 int ObsoleteSystemInfoBarDelegate::GetButtons() const {
   return BUTTON_NONE;
 }
 
 base::string16 ObsoleteSystemInfoBarDelegate::GetLinkText() const {
   return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
 }
 
 bool ObsoleteSystemInfoBarDelegate::LinkClicked(
     WindowOpenDisposition disposition) {
   InfoBarService::WebContentsFromInfoBar(infobar())->OpenURL(
       content::OpenURLParams(
 #if defined(OS_MACOSX)
           GURL(chrome::kMac32BitDeprecationURL),
 #else
           GURL("http://www.google.com/support/chrome/bin/"
                "answer.py?answer=95411"),
 #endif
           content::Referrer(),
           (disposition == CURRENT_TAB) ? NEW_FOREGROUND_TAB : disposition,
           content::PAGE_TRANSITION_LINK, false));
   return false;
 }