mac: Remove IsOSSnowLeopard().

ui/views/widget/native_widget_mac_interactive_uitest.mm

 // 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 "ui/views/widget/native_widget_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/mac_util.h"
 #import "base/mac/scoped_nsobject.h"
@@ skipping 146 matching lines @@
       [view bitmapImageRepForCachingDisplayInRect:[view bounds]];
   [view cacheDisplayInRect:[view bounds] toBitmapImageRep:bitmap];
   return [bitmap TIFFRepresentation];
 }
 
 }  // namespace
 
 // Test that parent windows keep their traffic lights enabled when showing
 // dialogs.
 TEST_F(NativeWidgetMacInteractiveUITest, ParentWindowTrafficLights) {
-  // Snow leopard doesn't have -[NSWindow _sharesParentKeyState].
-  if (base::mac::IsOSSnowLeopard())
-    return;
-
   Widget* parent_widget = CreateTopLevelPlatformWidget();
   parent_widget->SetBounds(gfx::Rect(100, 100, 100, 100));
   ShowKeyWindow(parent_widget);
 
   NSWindow* parent = parent_widget->GetNativeWindow();
   EXPECT_TRUE([parent isMainWindow]);
 
   NSButton* button = [parent standardWindowButton:NSWindowCloseButton];
   EXPECT_TRUE(button);
   NSData* active_button_image = ViewAsTIFF(button);
@@ skipping 34 matching lines @@
   other_widget->CloseNow();
   parent_widget->CloseNow();
 }
 
 INSTANTIATE_TEST_CASE_P(NativeWidgetMacInteractiveUITestInstance,
                         NativeWidgetMacInteractiveUITest,
                         ::testing::Bool());
 
 }  // namespace test
 }  // namespace views