Removing useless Win7 checks + standardize its use

chrome/browser/download/download_status_updater_win.cc

Index: chrome/browser/download/download_status_updater_win.cc
diff --git a/chrome/browser/download/download_status_updater_win.cc b/chrome/browser/download/download_status_updater_win.cc
index 93a36f005c6c6d6d5f95496eca4853fe6ff03c5c..6f6b3d77a68429979d413f6ef0d4e3282898731e 100644
--- a/chrome/browser/download/download_status_updater_win.cc
+++ b/chrome/browser/download/download_status_updater_win.cc
@@ -10,7 +10,6 @@
 
 #include "base/logging.h"
 #include "base/win/scoped_comptr.h"
-#include "base/win/windows_version.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
@@ -21,10 +20,6 @@ namespace {
 void UpdateTaskbarProgressBar(int download_count,
                               bool progress_known,
                               float progress) {
-  // Taskbar progress bar is only supported on Win7.
-  if (base::win::GetVersion() < base::win::VERSION_WIN7)
-    return;
-
   base::win::ScopedComPtr<ITaskbarList3> taskbar;
   HRESULT result = ::CoCreateInstance(
       CLSID_TaskbarList, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&taskbar));