Cleanup: Remove unneeded SSE2 checks and unused code.

chrome/browser/ui/startup/obsolete_system_infobar_delegate.cc

Index: chrome/browser/ui/startup/obsolete_system_infobar_delegate.cc
diff --git a/chrome/browser/ui/startup/obsolete_system_infobar_delegate.cc b/chrome/browser/ui/startup/obsolete_system_infobar_delegate.cc
index 06e858acd55db7fad7cef2769f3862af9020ebc0..b2cfc8899024155204fadb8612660f88605090da 100644
--- a/chrome/browser/ui/startup/obsolete_system_infobar_delegate.cc
+++ b/chrome/browser/ui/startup/obsolete_system_infobar_delegate.cc
@@ -4,7 +4,6 @@
 
 #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 "components/infobars/core/infobar.h"
@@ -24,10 +23,6 @@ void ObsoleteSystemInfoBarDelegate::Create(InfoBarService* infobar_service) {
       !ObsoleteSystemMac::Has32BitOnlyCPU()) {
     return;
   }
-#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;
@@ -47,8 +42,6 @@ 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