Removing useless Win7 checks + standardize its use

ui/events/blink/web_input_event_builders_win_unittest.cc

Index: ui/events/blink/web_input_event_builders_win_unittest.cc
diff --git a/ui/events/blink/web_input_event_builders_win_unittest.cc b/ui/events/blink/web_input_event_builders_win_unittest.cc
index f0a69e6d11adf5d6fad2df7a6a22e14a24ed9f2d..61837d0dbf7a615ba2781959ac5621299df5cbec 100644
--- a/ui/events/blink/web_input_event_builders_win_unittest.cc
+++ b/ui/events/blink/web_input_event_builders_win_unittest.cc
@@ -20,9 +20,6 @@ namespace ui {
 // This test validates that Pixel to DIP conversion occurs as needed in the
 // WebMouseEventBuilder::Build function.
 TEST(WebInputEventBuilderTest, TestMouseEventScale) {
-  if (base::win::GetVersion() < base::win::VERSION_WIN7)
-    return;
-
   display::Display::ResetForceDeviceScaleFactorForTesting();
 
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();