Reland: mus: Add views_mus_interactive_ui_tests target

ui/views/test/views_test_base.cc

Index: ui/views/test/views_test_base.cc
diff --git a/ui/views/test/views_test_base.cc b/ui/views/test/views_test_base.cc
index 0222a0fa30bc34a7a0a1d54a0c28ead7d90b884c..239f74bca503a02b3f0fb0e57c97096e78249620 100644
--- a/ui/views/test/views_test_base.cc
+++ b/ui/views/test/views_test_base.cc
@@ -10,6 +10,7 @@
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/test/material_design_controller_test_api.h"
+#include "ui/views/test/platform_test_helper.h"
 
 namespace views {
 
@@ -25,6 +26,11 @@ ViewsTestBase::~ViewsTestBase() {
       << "You have overridden TearDown but never called super class's TearDown";
 }
 
+// static
+bool ViewsTestBase::IsMus() {
+  return PlatformTestHelper::IsMus();
+}
+
 void ViewsTestBase::SetUp() {
   testing::Test::SetUp();
   // ContentTestSuiteBase might have already initialized
@@ -71,8 +77,4 @@ gfx::NativeWindow ViewsTestBase::GetContext() {
   return test_helper_->GetContext();
 }
 
-bool ViewsTestBase::IsMus() const {
-  return test_helper_->IsMus();
-}
-
 }  // namespace views