Removes code using mus client lib

ui/views/controls/button/custom_button_unittest.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 "ui/views/controls/button/custom_button.h"
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "build/build_config.h"
@@ skipping 203 matching lines @@
     EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
   }
 #endif
 
 // Disabling cursor events occurs for touch events and the Ash magnifier. There
 // is no touch on desktop Mac. Tracked in http://crbug.com/445520.
 #if !defined(OS_MACOSX) || defined(USE_AURA)
   aura::test::TestCursorClient cursor_client(
       widget()->GetNativeView()->GetRootWindow());
 
-  // Mus doesn't support disabling mouse events. https://crbug.com/618321
-  if (!IsMus()) {
-    // In Aura views, no new hover effects are invoked if mouse events
-    // are disabled.
-    cursor_client.DisableMouseEvents();
+  // In Aura views, no new hover effects are invoked if mouse events
+  // are disabled.
+  cursor_client.DisableMouseEvents();
 
-    button()->SetEnabled(false);
-    EXPECT_EQ(CustomButton::STATE_DISABLED, button()->state());
+  button()->SetEnabled(false);
+  EXPECT_EQ(CustomButton::STATE_DISABLED, button()->state());
 
-    button()->SetEnabled(true);
-    EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
+  button()->SetEnabled(true);
+  EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
 
-    button()->SetVisible(false);
-    EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
+  button()->SetVisible(false);
+  EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
 
-    button()->SetVisible(true);
-    EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
-  }
+  button()->SetVisible(true);
+  EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
 #endif  // !defined(OS_MACOSX) || defined(USE_AURA)
 }
 
 // Tests the different types of NotifyActions.
 TEST_F(CustomButtonTest, NotifyAction) {
   gfx::Point center(10, 10);
 
   // By default the button should notify its listener on mouse release.
   button()->OnMousePressed(ui::MouseEvent(
       ui::ET_MOUSE_PRESSED, center, center, ui::EventTimeForNow(),
@@ skipping 391 matching lines @@
   EXPECT_EQ(CustomButton::STATE_PRESSED, button()->state());
   EXPECT_FALSE(button()->pressed());
 
   ui::KeyEvent space_release(ui::ET_KEY_RELEASED, ui::VKEY_SPACE, ui::EF_NONE);
   SimulateKeyEvent(&space_release);
   EXPECT_EQ(CustomButton::STATE_NORMAL, button()->state());
   EXPECT_TRUE(button()->pressed());
 }
 
 }  // namespace views